Optimising finite-time photon extraction from emitter-cavity systems
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arXiv
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| Format: | Preprint |
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2024
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| _version_ | 1866911916574638080 |
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| author | Hughes, William J. Goodwin, Joseph F. Horak, Peter |
| author_facet | Hughes, William J. Goodwin, Joseph F. Horak, Peter |
| contents | We develop methods to find the limits to finite-time single photon extraction from emitter-cavity systems. We first establish analytic upper and lower bounds on the maximum extraction probability from a canonical $Λ$-system before developing a numeric method to optimise generic output probabilities from $Λ$-systems generalised to multiple ground states. We use these methods to study the limits to finite-time photon extraction and the wavepackets that satisfy them, finding that using an optimised wavepacket ranging between a sinusoidal and exponentially decaying profile can considerably reduce photon duration for a given extraction efficiency. We further optimise the rates of quantum protocols requiring emitter-photon correlation to obtain driving-independent conclusions about the effect of system parameters on success probability. We believe that these results and methods will provide valuable tools and insights for the development of cavity-based single photon sources combining high efficiency and high rate. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2403_10355 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Optimising finite-time photon extraction from emitter-cavity systems Hughes, William J. Goodwin, Joseph F. Horak, Peter Quantum Physics We develop methods to find the limits to finite-time single photon extraction from emitter-cavity systems. We first establish analytic upper and lower bounds on the maximum extraction probability from a canonical $Λ$-system before developing a numeric method to optimise generic output probabilities from $Λ$-systems generalised to multiple ground states. We use these methods to study the limits to finite-time photon extraction and the wavepackets that satisfy them, finding that using an optimised wavepacket ranging between a sinusoidal and exponentially decaying profile can considerably reduce photon duration for a given extraction efficiency. We further optimise the rates of quantum protocols requiring emitter-photon correlation to obtain driving-independent conclusions about the effect of system parameters on success probability. We believe that these results and methods will provide valuable tools and insights for the development of cavity-based single photon sources combining high efficiency and high rate. |
| title | Optimising finite-time photon extraction from emitter-cavity systems |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2403.10355 |