Deterministically entangling multiple remote quantum memories inside an optical cavity

Yan, Zhihui; Liu, Yanhong; Yan, Jieli; Jia, Xiaojun

doi:10.1103/physreva.97.013856

Cited by 11 publications

(5 citation statements)

References 65 publications

(109 reference statements)

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“…In the cavity-enhanced memory system, the memory efficiency is defined as the ratio of the photon number of the released signal mode to that of the input signal mode, which depends on storage mechanism, media property and systematic losses. By solving quantum Langevin equations with the proper input temporal mode function, the memory efficiency η ( T 0 ) at the storage time T 0 from input optical mode to released optical mode is given by 40 …”

Section: Resultsmentioning

confidence: 99%

High-performance cavity-enhanced quantum memory with warm atomic cell

Lei

Yan

et al. 2022

Nat Commun

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High-performance quantum memory for quantized states of light is a prerequisite building block of quantum information technology. Despite great progresses of optical quantum memories based on interactions of light and atoms, physical features of these memories still cannot satisfy requirements for applications in practical quantum information systems, since all of them suffer from trade-off between memory efficiency and excess noise. Here, we report a high-performance cavity-enhanced electromagnetically-induced-transparency memory with warm atomic cell in which a scheme of optimizing the spatial and temporal modes based on the time-reversal approach is applied. The memory efficiency up to 67 ± 1% is directly measured and a noise level close to quantum noise limit is simultaneously reached. It has been experimentally demonstrated that the average fidelities for a set of input coherent states with different phases and amplitudes within a Gaussian distribution have exceeded the classical benchmark fidelities. Thus the realized quantum memory platform has been capable of preserving quantized optical states, and is ready to be applied in quantum information systems, such as distributed quantum logic gates and quantum-enhanced atomic magnetometry.

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Section: Resultsmentioning

confidence: 99%

High-performance cavity-enhanced quantum memory with warm atomic cell

Lei

Yan

et al. 2022

Nat Commun

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show abstract

“…In the cavity-enhanced memory system, the memory efficiency is defined as the ratio of the photon number of the released signal mode to that of the input signal mode, which depends on storage mechanism, media property and systematic losses. By solving quantum Langevin equa-tions with the proper input temporal mode function, the memory efficiency η(T 0 ) at the storage time T 0 from input optical mode to released optical mode is given by [40]…”

Section: Resultsmentioning

confidence: 99%

High-performance cavity-enhanced quantum memory with warm atomic cell

Ma,

Lei,

Yan

et al. 2022

Preprint

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High-performance quantum memory for quantized states of light is a prerequisite building block of quantum information technology. Despite great progresses of optical quantum memories based on interactions of light and atoms, physical features of these memories still cannot satisfy requirements for applications in practical quantum information systems, since all of them suffer from trade-off between memory efficiency and excess noise. Here, we report a high-performance cavity-enhanced electromagnetically-induced-transparency memory with warm atomic cell in which a scheme of optimizing the spatial and temporal modes based on the time-reversal approach is applied. The memory efficiency up to 67±1% is directly measured and a noise level close to quantum noise limit is simultaneously reached. It has been experimentally demonstrated that the average fidelities for a set of input coherent states with different phases and amplitudes within a Gaussian distribution have exceeded the classical benchmark fidelities. Thus the realized quantum memory platform has been capable of preserving quantized optical states, and is ready to be applied in quantum information systems, such as distributed quantum logic gates and quantum-enhanced atomic magnetometry.

show abstract

“…The input mode is dynamically shaped in time to provide optimum memory efficiency, and the temporal mode function in our system is approximately described by a rising exponential function [37]. By solving quantum Langevin equations with the proper input temporal mode function, the memory efficiency η(T 0 ) at the user-controlled storage time T 0 from input optical mode to stored-and-retrieved optical mode is given by [46]…”

Section: Resultsmentioning

confidence: 99%

High-performance cavity-enhanced quantum memory with warm atomic cell

Liu

Yan

et al. 2021

Preprint

Self Cite

View full text Add to dashboard Cite

High-performance quantum memory for quantized states of light is a prerequisite building block of quantum information technology. Despite great progresses of optical quantum memories based on interactions of light and atoms, physical features of these memories still can not satisfy the requirement for applications in practical quantum information systems, since all of them suffer from trade off between memory efficiency and excess noise. Here, we report a high-performance cavity-enhanced electromagnetically-induced-transparency memory with warm atomic cell in which a scheme of optimizing the spatial and temporal modes based on the time-reversal approach is applied. A quantum memory with the efficiency up to 78 + 1% and the noise level close to quantum noise limit has been experimentally achieved. The realized quantum memory platform has been capable of preserving quantized optical states, and thus is ready to be applied in quantum information systems, such as distributed quantum logic gates and quantum-enhanced atomic magnetometry.

show abstract

Deterministically entangling multiple remote quantum memories inside an optical cavity

Cited by 11 publications

References 65 publications

High-performance cavity-enhanced quantum memory with warm atomic cell

High-performance cavity-enhanced quantum memory with warm atomic cell

High-performance cavity-enhanced quantum memory with warm atomic cell

High-performance cavity-enhanced quantum memory with warm atomic cell

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