Quantum error correction below the surface code threshold

Fuente: arXiv
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Dettagli Bibliografici
Autori principali: Acharya, Rajeev, Aghababaie-Beni, Laleh, Aleiner, Igor, Andersen, Trond I., Ansmann, Markus, Arute, Frank, Arya, Kunal, Asfaw, Abraham, Astrakhantsev, Nikita, Atalaya, Juan, Babbush, Ryan, Bacon, Dave, Ballard, Brian, Bardin, Joseph C., Bausch, Johannes, Bengtsson, Andreas, Bilmes, Alexander, Blackwell, Sam, Boixo, Sergio, Bortoli, Gina, Bourassa, Alexandre, Bovaird, Jenna, Brill, Leon, Broughton, Michael, Browne, David A., Buchea, Brett, Buckley, Bob B., Buell, David A., Burger, Tim, Burkett, Brian, Bushnell, Nicholas, Cabrera, Anthony, Campero, Juan, Chang, Hung-Shen, Chen, Yu, Chen, Zijun, Chiaro, Ben, Chik, Desmond, Chou, Charina, Claes, Jahan, Cleland, Agnetta Y., Cogan, Josh, Collins, Roberto, Conner, Paul, Courtney, William, Crook, Alexander L., Curtin, Ben, Das, Sayan, Davies, Alex, De Lorenzo, Laura, Debroy, Dripto M., Demura, Sean, Devoret, Michel, Di Paolo, Agustin, Donohoe, Paul, Drozdov, Ilya, Dunsworth, Andrew, Earle, Clint, Edlich, Thomas, Eickbusch, Alec, Elbag, Aviv Moshe, Elzouka, Mahmoud, Erickson, Catherine, Faoro, Lara, Farhi, Edward, Ferreira, Vinicius S., Burgos, Leslie Flores, Forati, Ebrahim, Fowler, Austin G., Foxen, Brooks, Ganjam, Suhas, Garcia, Gonzalo, Gasca, Robert, Genois, Élie, Giang, William, Gidney, Craig, Gilboa, Dar, Gosula, Raja, Dau, Alejandro Grajales, Graumann, Dietrich, Greene, Alex, Gross, Jonathan A., Habegger, Steve, Hall, John, Hamilton, Michael C., Hansen, Monica, Harrigan, Matthew P., Harrington, Sean D., Heras, Francisco J. H., Heslin, Stephen, Heu, Paula, Higgott, Oscar, Hill, Gordon, Hilton, Jeremy, Holland, George, Hong, Sabrina, Huang, Hsin-Yuan, Huff, Ashley, Huggins, William J., Ioffe, Lev B., Isakov, Sergei V., Iveland, Justin, Jeffrey, Evan, Jiang, Zhang, Jones, Cody, Jordan, Stephen, Joshi, Chaitali, Juhas, Pavol, Kafri, Dvir, Kang, Hui, Karamlou, Amir H., Kechedzhi, Kostyantyn, Kelly, Julian, Khaire, Trupti, Khattar, Tanuj, Khezri, Mostafa, Kim, Seon, Klimov, Paul V., Klots, Andrey R., Kobrin, Bryce, Kohli, Pushmeet, Korotkov, Alexander N., Kostritsa, Fedor, Kothari, Robin, Kozlovskii, Borislav, Kreikebaum, John Mark, Kurilovich, Vladislav D., Lacroix, Nathan, Landhuis, David, Lange-Dei, Tiano, Langley, Brandon W., Laptev, Pavel, Lau, Kim-Ming, Guevel, Loïck Le, Ledford, Justin, Lee, Kenny, Lensky, Yuri D., Leon, Shannon, Lester, Brian J., Li, Wing Yan, Li, Yin, Lill, Alexander T., Liu, Wayne, Livingston, William P., Locharla, Aditya, Lucero, Erik, Lundahl, Daniel, Lunt, Aaron, Madhuk, Sid, Malone, Fionn D., Maloney, Ashley, Mandrá, Salvatore, Martin, Leigh S., Martin, Steven, Martin, Orion, Maxfield, Cameron, McClean, Jarrod R., McEwen, Matt, Meeks, Seneca, Megrant, Anthony, Mi, Xiao, Miao, Kevin C., Mieszala, Amanda, Molavi, Reza, Molina, Sebastian, Montazeri, Shirin, Morvan, Alexis, Movassagh, Ramis, Mruczkiewicz, Wojciech, Naaman, Ofer, Neeley, Matthew, Neill, Charles, Nersisyan, Ani, Neven, Hartmut, Newman, Michael, Ng, Jiun How, Nguyen, Anthony, Nguyen, Murray, Ni, Chia-Hung, O'Brien, Thomas E., Oliver, William D., Opremcak, Alex, Ottosson, Kristoffer, Petukhov, Andre, Pizzuto, Alex, Platt, John, Potter, Rebecca, Pritchard, Orion, Pryadko, Leonid P., Quintana, Chris, Ramachandran, Ganesh, Reagor, Matthew J., Rhodes, David M., Roberts, Gabrielle, Rosenberg, Eliott, Rosenfeld, Emma, Roushan, Pedram, Rubin, Nicholas C., Saei, Negar, Sank, Daniel, Sankaragomathi, Kannan, Satzinger, Kevin J., Schurkus, Henry F., Schuster, Christopher, Senior, Andrew W., Shearn, Michael J., Shorter, Aaron, Shutty, Noah, Shvarts, Vladimir, Singh, Shraddha, Sivak, Volodymyr, Skruzny, Jindra, Small, Spencer, Smelyanskiy, Vadim, Smith, W. Clarke, Somma, Rolando D., Springer, Sofia, Sterling, George, Strain, Doug, Suchard, Jordan, Szasz, Aaron, Sztein, Alex, Thor, Douglas, Torres, Alfredo, Torunbalci, M. Mert, Vaishnav, Abeer, Vargas, Justin, Vdovichev, Sergey, Vidal, Guifre, Villalonga, Benjamin, Heidweiller, Catherine Vollgraff, Waltman, Steven, Wang, Shannon X., Ware, Brayden, Weber, Kate, White, Theodore, Wong, Kristi, Woo, Bryan W. K., Xing, Cheng, Yao, Z. Jamie, Yeh, Ping, Ying, Bicheng, Yoo, Juhwan, Yosri, Noureldin, Young, Grayson, Zalcman, Adam, Zhang, Yaxing, Zhu, Ningfeng, Zobrist, Nicholas
Natura: Preprint
Pubblicazione: 2024
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author Acharya, Rajeev
Aghababaie-Beni, Laleh
Aleiner, Igor
Andersen, Trond I.
Ansmann, Markus
Arute, Frank
Arya, Kunal
Asfaw, Abraham
Astrakhantsev, Nikita
Atalaya, Juan
Babbush, Ryan
Bacon, Dave
Ballard, Brian
Bardin, Joseph C.
Bausch, Johannes
Bengtsson, Andreas
Bilmes, Alexander
Blackwell, Sam
Boixo, Sergio
Bortoli, Gina
Bourassa, Alexandre
Bovaird, Jenna
Brill, Leon
Broughton, Michael
Browne, David A.
Buchea, Brett
Buckley, Bob B.
Buell, David A.
Burger, Tim
Burkett, Brian
Bushnell, Nicholas
Cabrera, Anthony
Campero, Juan
Chang, Hung-Shen
Chen, Yu
Chen, Zijun
Chiaro, Ben
Chik, Desmond
Chou, Charina
Claes, Jahan
Cleland, Agnetta Y.
Cogan, Josh
Collins, Roberto
Conner, Paul
Courtney, William
Crook, Alexander L.
Curtin, Ben
Das, Sayan
Davies, Alex
De Lorenzo, Laura
Debroy, Dripto M.
Demura, Sean
Devoret, Michel
Di Paolo, Agustin
Donohoe, Paul
Drozdov, Ilya
Dunsworth, Andrew
Earle, Clint
Edlich, Thomas
Eickbusch, Alec
Elbag, Aviv Moshe
Elzouka, Mahmoud
Erickson, Catherine
Faoro, Lara
Farhi, Edward
Ferreira, Vinicius S.
Burgos, Leslie Flores
Forati, Ebrahim
Fowler, Austin G.
Foxen, Brooks
Ganjam, Suhas
Garcia, Gonzalo
Gasca, Robert
Genois, Élie
Giang, William
Gidney, Craig
Gilboa, Dar
Gosula, Raja
Dau, Alejandro Grajales
Graumann, Dietrich
Greene, Alex
Gross, Jonathan A.
Habegger, Steve
Hall, John
Hamilton, Michael C.
Hansen, Monica
Harrigan, Matthew P.
Harrington, Sean D.
Heras, Francisco J. H.
Heslin, Stephen
Heu, Paula
Higgott, Oscar
Hill, Gordon
Hilton, Jeremy
Holland, George
Hong, Sabrina
Huang, Hsin-Yuan
Huff, Ashley
Huggins, William J.
Ioffe, Lev B.
Isakov, Sergei V.
Iveland, Justin
Jeffrey, Evan
Jiang, Zhang
Jones, Cody
Jordan, Stephen
Joshi, Chaitali
Juhas, Pavol
Kafri, Dvir
Kang, Hui
Karamlou, Amir H.
Kechedzhi, Kostyantyn
Kelly, Julian
Khaire, Trupti
Khattar, Tanuj
Khezri, Mostafa
Kim, Seon
Klimov, Paul V.
Klots, Andrey R.
Kobrin, Bryce
Kohli, Pushmeet
Korotkov, Alexander N.
Kostritsa, Fedor
Kothari, Robin
Kozlovskii, Borislav
Kreikebaum, John Mark
Kurilovich, Vladislav D.
Lacroix, Nathan
Landhuis, David
Lange-Dei, Tiano
Langley, Brandon W.
Laptev, Pavel
Lau, Kim-Ming
Guevel, Loïck Le
Ledford, Justin
Lee, Kenny
Lensky, Yuri D.
Leon, Shannon
Lester, Brian J.
Li, Wing Yan
Li, Yin
Lill, Alexander T.
Liu, Wayne
Livingston, William P.
Locharla, Aditya
Lucero, Erik
Lundahl, Daniel
Lunt, Aaron
Madhuk, Sid
Malone, Fionn D.
Maloney, Ashley
Mandrá, Salvatore
Martin, Leigh S.
Martin, Steven
Martin, Orion
Maxfield, Cameron
McClean, Jarrod R.
McEwen, Matt
Meeks, Seneca
Megrant, Anthony
Mi, Xiao
Miao, Kevin C.
Mieszala, Amanda
Molavi, Reza
Molina, Sebastian
Montazeri, Shirin
Morvan, Alexis
Movassagh, Ramis
Mruczkiewicz, Wojciech
Naaman, Ofer
Neeley, Matthew
Neill, Charles
Nersisyan, Ani
Neven, Hartmut
Newman, Michael
Ng, Jiun How
Nguyen, Anthony
Nguyen, Murray
Ni, Chia-Hung
O'Brien, Thomas E.
Oliver, William D.
Opremcak, Alex
Ottosson, Kristoffer
Petukhov, Andre
Pizzuto, Alex
Platt, John
Potter, Rebecca
Pritchard, Orion
Pryadko, Leonid P.
Quintana, Chris
Ramachandran, Ganesh
Reagor, Matthew J.
Rhodes, David M.
Roberts, Gabrielle
Rosenberg, Eliott
Rosenfeld, Emma
Roushan, Pedram
Rubin, Nicholas C.
Saei, Negar
Sank, Daniel
Sankaragomathi, Kannan
Satzinger, Kevin J.
Schurkus, Henry F.
Schuster, Christopher
Senior, Andrew W.
Shearn, Michael J.
Shorter, Aaron
Shutty, Noah
Shvarts, Vladimir
Singh, Shraddha
Sivak, Volodymyr
Skruzny, Jindra
Small, Spencer
Smelyanskiy, Vadim
Smith, W. Clarke
Somma, Rolando D.
Springer, Sofia
Sterling, George
Strain, Doug
Suchard, Jordan
Szasz, Aaron
Sztein, Alex
Thor, Douglas
Torres, Alfredo
Torunbalci, M. Mert
Vaishnav, Abeer
Vargas, Justin
Vdovichev, Sergey
Vidal, Guifre
Villalonga, Benjamin
Heidweiller, Catherine Vollgraff
Waltman, Steven
Wang, Shannon X.
Ware, Brayden
Weber, Kate
White, Theodore
Wong, Kristi
Woo, Bryan W. K.
Xing, Cheng
Yao, Z. Jamie
Yeh, Ping
Ying, Bicheng
Yoo, Juhwan
Yosri, Noureldin
Young, Grayson
Zalcman, Adam
Zhang, Yaxing
Zhu, Ningfeng
Zobrist, Nicholas
author_facet Acharya, Rajeev
Aghababaie-Beni, Laleh
Aleiner, Igor
Andersen, Trond I.
Ansmann, Markus
Arute, Frank
Arya, Kunal
Asfaw, Abraham
Astrakhantsev, Nikita
Atalaya, Juan
Babbush, Ryan
Bacon, Dave
Ballard, Brian
Bardin, Joseph C.
Bausch, Johannes
Bengtsson, Andreas
Bilmes, Alexander
Blackwell, Sam
Boixo, Sergio
Bortoli, Gina
Bourassa, Alexandre
Bovaird, Jenna
Brill, Leon
Broughton, Michael
Browne, David A.
Buchea, Brett
Buckley, Bob B.
Buell, David A.
Burger, Tim
Burkett, Brian
Bushnell, Nicholas
Cabrera, Anthony
Campero, Juan
Chang, Hung-Shen
Chen, Yu
Chen, Zijun
Chiaro, Ben
Chik, Desmond
Chou, Charina
Claes, Jahan
Cleland, Agnetta Y.
Cogan, Josh
Collins, Roberto
Conner, Paul
Courtney, William
Crook, Alexander L.
Curtin, Ben
Das, Sayan
Davies, Alex
De Lorenzo, Laura
Debroy, Dripto M.
Demura, Sean
Devoret, Michel
Di Paolo, Agustin
Donohoe, Paul
Drozdov, Ilya
Dunsworth, Andrew
Earle, Clint
Edlich, Thomas
Eickbusch, Alec
Elbag, Aviv Moshe
Elzouka, Mahmoud
Erickson, Catherine
Faoro, Lara
Farhi, Edward
Ferreira, Vinicius S.
Burgos, Leslie Flores
Forati, Ebrahim
Fowler, Austin G.
Foxen, Brooks
Ganjam, Suhas
Garcia, Gonzalo
Gasca, Robert
Genois, Élie
Giang, William
Gidney, Craig
Gilboa, Dar
Gosula, Raja
Dau, Alejandro Grajales
Graumann, Dietrich
Greene, Alex
Gross, Jonathan A.
Habegger, Steve
Hall, John
Hamilton, Michael C.
Hansen, Monica
Harrigan, Matthew P.
Harrington, Sean D.
Heras, Francisco J. H.
Heslin, Stephen
Heu, Paula
Higgott, Oscar
Hill, Gordon
Hilton, Jeremy
Holland, George
Hong, Sabrina
Huang, Hsin-Yuan
Huff, Ashley
Huggins, William J.
Ioffe, Lev B.
Isakov, Sergei V.
Iveland, Justin
Jeffrey, Evan
Jiang, Zhang
Jones, Cody
Jordan, Stephen
Joshi, Chaitali
Juhas, Pavol
Kafri, Dvir
Kang, Hui
Karamlou, Amir H.
Kechedzhi, Kostyantyn
Kelly, Julian
Khaire, Trupti
Khattar, Tanuj
Khezri, Mostafa
Kim, Seon
Klimov, Paul V.
Klots, Andrey R.
Kobrin, Bryce
Kohli, Pushmeet
Korotkov, Alexander N.
Kostritsa, Fedor
Kothari, Robin
Kozlovskii, Borislav
Kreikebaum, John Mark
Kurilovich, Vladislav D.
Lacroix, Nathan
Landhuis, David
Lange-Dei, Tiano
Langley, Brandon W.
Laptev, Pavel
Lau, Kim-Ming
Guevel, Loïck Le
Ledford, Justin
Lee, Kenny
Lensky, Yuri D.
Leon, Shannon
Lester, Brian J.
Li, Wing Yan
Li, Yin
Lill, Alexander T.
Liu, Wayne
Livingston, William P.
Locharla, Aditya
Lucero, Erik
Lundahl, Daniel
Lunt, Aaron
Madhuk, Sid
Malone, Fionn D.
Maloney, Ashley
Mandrá, Salvatore
Martin, Leigh S.
Martin, Steven
Martin, Orion
Maxfield, Cameron
McClean, Jarrod R.
McEwen, Matt
Meeks, Seneca
Megrant, Anthony
Mi, Xiao
Miao, Kevin C.
Mieszala, Amanda
Molavi, Reza
Molina, Sebastian
Montazeri, Shirin
Morvan, Alexis
Movassagh, Ramis
Mruczkiewicz, Wojciech
Naaman, Ofer
Neeley, Matthew
Neill, Charles
Nersisyan, Ani
Neven, Hartmut
Newman, Michael
Ng, Jiun How
Nguyen, Anthony
Nguyen, Murray
Ni, Chia-Hung
O'Brien, Thomas E.
Oliver, William D.
Opremcak, Alex
Ottosson, Kristoffer
Petukhov, Andre
Pizzuto, Alex
Platt, John
Potter, Rebecca
Pritchard, Orion
Pryadko, Leonid P.
Quintana, Chris
Ramachandran, Ganesh
Reagor, Matthew J.
Rhodes, David M.
Roberts, Gabrielle
Rosenberg, Eliott
Rosenfeld, Emma
Roushan, Pedram
Rubin, Nicholas C.
Saei, Negar
Sank, Daniel
Sankaragomathi, Kannan
Satzinger, Kevin J.
Schurkus, Henry F.
Schuster, Christopher
Senior, Andrew W.
Shearn, Michael J.
Shorter, Aaron
Shutty, Noah
Shvarts, Vladimir
Singh, Shraddha
Sivak, Volodymyr
Skruzny, Jindra
Small, Spencer
Smelyanskiy, Vadim
Smith, W. Clarke
Somma, Rolando D.
Springer, Sofia
Sterling, George
Strain, Doug
Suchard, Jordan
Szasz, Aaron
Sztein, Alex
Thor, Douglas
Torres, Alfredo
Torunbalci, M. Mert
Vaishnav, Abeer
Vargas, Justin
Vdovichev, Sergey
Vidal, Guifre
Villalonga, Benjamin
Heidweiller, Catherine Vollgraff
Waltman, Steven
Wang, Shannon X.
Ware, Brayden
Weber, Kate
White, Theodore
Wong, Kristi
Woo, Bryan W. K.
Xing, Cheng
Yao, Z. Jamie
Yeh, Ping
Ying, Bicheng
Yoo, Juhwan
Yosri, Noureldin
Young, Grayson
Zalcman, Adam
Zhang, Yaxing
Zhu, Ningfeng
Zobrist, Nicholas
contents Quantum error correction provides a path to reach practical quantum computing by combining multiple physical qubits into a logical qubit, where the logical error rate is suppressed exponentially as more qubits are added. However, this exponential suppression only occurs if the physical error rate is below a critical threshold. In this work, we present two surface code memories operating below this threshold: a distance-7 code and a distance-5 code integrated with a real-time decoder. The logical error rate of our larger quantum memory is suppressed by a factor of $Λ$ = 2.14 $\pm$ 0.02 when increasing the code distance by two, culminating in a 101-qubit distance-7 code with 0.143% $\pm$ 0.003% error per cycle of error correction. This logical memory is also beyond break-even, exceeding its best physical qubit's lifetime by a factor of 2.4 $\pm$ 0.3. We maintain below-threshold performance when decoding in real time, achieving an average decoder latency of 63 $μ$s at distance-5 up to a million cycles, with a cycle time of 1.1 $μ$s. To probe the limits of our error-correction performance, we run repetition codes up to distance-29 and find that logical performance is limited by rare correlated error events occurring approximately once every hour, or 3 $\times$ 10$^9$ cycles. Our results present device performance that, if scaled, could realize the operational requirements of large scale fault-tolerant quantum algorithms.
format Preprint
id arxiv_https___arxiv_org_abs_2408_13687
institution arXiv
publishDate 2024
record_format arxiv
spellingShingle Quantum error correction below the surface code threshold
Acharya, Rajeev
Aghababaie-Beni, Laleh
Aleiner, Igor
Andersen, Trond I.
Ansmann, Markus
Arute, Frank
Arya, Kunal
Asfaw, Abraham
Astrakhantsev, Nikita
Atalaya, Juan
Babbush, Ryan
Bacon, Dave
Ballard, Brian
Bardin, Joseph C.
Bausch, Johannes
Bengtsson, Andreas
Bilmes, Alexander
Blackwell, Sam
Boixo, Sergio
Bortoli, Gina
Bourassa, Alexandre
Bovaird, Jenna
Brill, Leon
Broughton, Michael
Browne, David A.
Buchea, Brett
Buckley, Bob B.
Buell, David A.
Burger, Tim
Burkett, Brian
Bushnell, Nicholas
Cabrera, Anthony
Campero, Juan
Chang, Hung-Shen
Chen, Yu
Chen, Zijun
Chiaro, Ben
Chik, Desmond
Chou, Charina
Claes, Jahan
Cleland, Agnetta Y.
Cogan, Josh
Collins, Roberto
Conner, Paul
Courtney, William
Crook, Alexander L.
Curtin, Ben
Das, Sayan
Davies, Alex
De Lorenzo, Laura
Debroy, Dripto M.
Demura, Sean
Devoret, Michel
Di Paolo, Agustin
Donohoe, Paul
Drozdov, Ilya
Dunsworth, Andrew
Earle, Clint
Edlich, Thomas
Eickbusch, Alec
Elbag, Aviv Moshe
Elzouka, Mahmoud
Erickson, Catherine
Faoro, Lara
Farhi, Edward
Ferreira, Vinicius S.
Burgos, Leslie Flores
Forati, Ebrahim
Fowler, Austin G.
Foxen, Brooks
Ganjam, Suhas
Garcia, Gonzalo
Gasca, Robert
Genois, Élie
Giang, William
Gidney, Craig
Gilboa, Dar
Gosula, Raja
Dau, Alejandro Grajales
Graumann, Dietrich
Greene, Alex
Gross, Jonathan A.
Habegger, Steve
Hall, John
Hamilton, Michael C.
Hansen, Monica
Harrigan, Matthew P.
Harrington, Sean D.
Heras, Francisco J. H.
Heslin, Stephen
Heu, Paula
Higgott, Oscar
Hill, Gordon
Hilton, Jeremy
Holland, George
Hong, Sabrina
Huang, Hsin-Yuan
Huff, Ashley
Huggins, William J.
Ioffe, Lev B.
Isakov, Sergei V.
Iveland, Justin
Jeffrey, Evan
Jiang, Zhang
Jones, Cody
Jordan, Stephen
Joshi, Chaitali
Juhas, Pavol
Kafri, Dvir
Kang, Hui
Karamlou, Amir H.
Kechedzhi, Kostyantyn
Kelly, Julian
Khaire, Trupti
Khattar, Tanuj
Khezri, Mostafa
Kim, Seon
Klimov, Paul V.
Klots, Andrey R.
Kobrin, Bryce
Kohli, Pushmeet
Korotkov, Alexander N.
Kostritsa, Fedor
Kothari, Robin
Kozlovskii, Borislav
Kreikebaum, John Mark
Kurilovich, Vladislav D.
Lacroix, Nathan
Landhuis, David
Lange-Dei, Tiano
Langley, Brandon W.
Laptev, Pavel
Lau, Kim-Ming
Guevel, Loïck Le
Ledford, Justin
Lee, Kenny
Lensky, Yuri D.
Leon, Shannon
Lester, Brian J.
Li, Wing Yan
Li, Yin
Lill, Alexander T.
Liu, Wayne
Livingston, William P.
Locharla, Aditya
Lucero, Erik
Lundahl, Daniel
Lunt, Aaron
Madhuk, Sid
Malone, Fionn D.
Maloney, Ashley
Mandrá, Salvatore
Martin, Leigh S.
Martin, Steven
Martin, Orion
Maxfield, Cameron
McClean, Jarrod R.
McEwen, Matt
Meeks, Seneca
Megrant, Anthony
Mi, Xiao
Miao, Kevin C.
Mieszala, Amanda
Molavi, Reza
Molina, Sebastian
Montazeri, Shirin
Morvan, Alexis
Movassagh, Ramis
Mruczkiewicz, Wojciech
Naaman, Ofer
Neeley, Matthew
Neill, Charles
Nersisyan, Ani
Neven, Hartmut
Newman, Michael
Ng, Jiun How
Nguyen, Anthony
Nguyen, Murray
Ni, Chia-Hung
O'Brien, Thomas E.
Oliver, William D.
Opremcak, Alex
Ottosson, Kristoffer
Petukhov, Andre
Pizzuto, Alex
Platt, John
Potter, Rebecca
Pritchard, Orion
Pryadko, Leonid P.
Quintana, Chris
Ramachandran, Ganesh
Reagor, Matthew J.
Rhodes, David M.
Roberts, Gabrielle
Rosenberg, Eliott
Rosenfeld, Emma
Roushan, Pedram
Rubin, Nicholas C.
Saei, Negar
Sank, Daniel
Sankaragomathi, Kannan
Satzinger, Kevin J.
Schurkus, Henry F.
Schuster, Christopher
Senior, Andrew W.
Shearn, Michael J.
Shorter, Aaron
Shutty, Noah
Shvarts, Vladimir
Singh, Shraddha
Sivak, Volodymyr
Skruzny, Jindra
Small, Spencer
Smelyanskiy, Vadim
Smith, W. Clarke
Somma, Rolando D.
Springer, Sofia
Sterling, George
Strain, Doug
Suchard, Jordan
Szasz, Aaron
Sztein, Alex
Thor, Douglas
Torres, Alfredo
Torunbalci, M. Mert
Vaishnav, Abeer
Vargas, Justin
Vdovichev, Sergey
Vidal, Guifre
Villalonga, Benjamin
Heidweiller, Catherine Vollgraff
Waltman, Steven
Wang, Shannon X.
Ware, Brayden
Weber, Kate
White, Theodore
Wong, Kristi
Woo, Bryan W. K.
Xing, Cheng
Yao, Z. Jamie
Yeh, Ping
Ying, Bicheng
Yoo, Juhwan
Yosri, Noureldin
Young, Grayson
Zalcman, Adam
Zhang, Yaxing
Zhu, Ningfeng
Zobrist, Nicholas
Quantum Physics
Quantum error correction provides a path to reach practical quantum computing by combining multiple physical qubits into a logical qubit, where the logical error rate is suppressed exponentially as more qubits are added. However, this exponential suppression only occurs if the physical error rate is below a critical threshold. In this work, we present two surface code memories operating below this threshold: a distance-7 code and a distance-5 code integrated with a real-time decoder. The logical error rate of our larger quantum memory is suppressed by a factor of $Λ$ = 2.14 $\pm$ 0.02 when increasing the code distance by two, culminating in a 101-qubit distance-7 code with 0.143% $\pm$ 0.003% error per cycle of error correction. This logical memory is also beyond break-even, exceeding its best physical qubit's lifetime by a factor of 2.4 $\pm$ 0.3. We maintain below-threshold performance when decoding in real time, achieving an average decoder latency of 63 $μ$s at distance-5 up to a million cycles, with a cycle time of 1.1 $μ$s. To probe the limits of our error-correction performance, we run repetition codes up to distance-29 and find that logical performance is limited by rare correlated error events occurring approximately once every hour, or 3 $\times$ 10$^9$ cycles. Our results present device performance that, if scaled, could realize the operational requirements of large scale fault-tolerant quantum algorithms.
title Quantum error correction below the surface code threshold
topic Quantum Physics
url https://arxiv.org/abs/2408.13687