Photon-Efficient Communication Based on BPSK Modulation with Multistage Interferometric Receivers

Zwoliński, Wojciech; Jarzyna, Marcin; Kunz, Ludwig; Jachura, Michał; Banaszek, Konrad

doi:10.1109/ecoc48923.2020.9333190

Cited by 2 publications

(3 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As illustrated in Fig. 7, analogous PIE values can be achieved with other modulation formats, 40 such as frequency shift keying (FSK) 41 or words composed from the binary phase shift keyed alphabet 42 and demodulated with multistage interferometric receivers, 43 – 45 where technical challenges would take different forms.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Photon information efficiency limits in deep-space optical communications

Jarzyna,

Kunz,

Zwoliński

et al. 2024

Opt. Eng.

Self Cite

View full text Add to dashboard Cite

Deep-space optical communication links operate under severely limited signal power, approaching the photon-starved regime that requires a receiver capable of measuring individual incoming photons. This makes the photon information efficiency (PIE), i.e., the number of bits that can be retrieved from a single received photon, a relevant figure of merit to characterize data rates achievable in deepspace scenarios. We review theoretical PIE limits assuming a scalable modulation format, such as pulse position modulation (PPM), combined with a photon counting direct detection receiver. For unrestricted signal bandwidth, the attainable PIE is effectively limited by the background noise acquired by the propagating optical signal. The actual PIE limit depends on the effectiveness of the noise rejection mechanism implemented at the receiver, which can be improved by the nonlinear optical technique of quantum pulse gating. Further enhancement is possible by resorting to photon number resolved detection, which improves discrimination of PPM pulses against weak background noise. The results are compared with the ultimate quantum mechanical PIE limit implied by the Gordon-Holevo capacity bound, which takes into account general modulation formats as well as any physically permitted measurement techniques.

show abstract

Section: Discussionmentioning

confidence: 99%

“…The latter figure is increased to n n ¼ −42.5 dB for the hypothetical daytime operation scenario in "day" columns. keyed alphabet 42 and demodulated with multistage interferometric receivers, [43][44][45] where technical challenges would take different forms.…”

Section: Discussionmentioning

confidence: 99%

Photon information efficiency limits in deep-space optical communications

Jarzyna,

Kunz,

Zwoliński

et al. 2024

Opt. Eng.

Self Cite

View full text Add to dashboard Cite

show abstract

“…Quantum states of individual qubits can be read out using a cascade of interferometric stages in a manner analogous to the recently proposed receiver for photon-efficient classical communication with BPSK signals. 9,10 As increasing the number of logical qubits encoded in one photon may augment the detrimental effects of broadband background optical radiation on the detected quantum correlations, we use a simple model to identify the optimal operating point determined by the attenuation of the satellite-toground optical channels and the background noise strength. Based on the parameters of the MICIUS mission, 11,12 numerical results indicate the potential of multiqubit encoding for a nearly tenfold increase of the attainable key rate for entanglement-based LEO satellite QKD systems.…”

Section: Introductionmentioning

confidence: 99%

Photon-efficient quantum key distribution using multiqubit time-bin encoding

Jachura

Jarzyna

Pawłowski

et al. 2021

International Conference on Space Optics — ICSO 2020

Self Cite

View full text Add to dashboard Cite

A method for photon-efficient quantum key distribution (QKD) is proposed and analyzed theoretically. The technique is based on nested encoding of multiple logical qubits into the discretized temporal degree of freedom of a single photon. The states of individual logical qubits are measured using a cascade of interferometric stages followed by time-resolved photon counting. The method may be useful in implementations of entanglement-based QKD protocols whose performance is limited by the brightness of onboard sources of nonclassical light, based e.g. on spontaneous parametric down-conversion. Numerical optimization taking into account the presence of background noise indicates the potential of multiqubit encoding for a nearly tenfold increase of the attainable key rate for entanglement-based LEO satellite QKD systems.

show abstract

Photon-Efficient Communication Based on BPSK Modulation with Multistage Interferometric Receivers

Cited by 2 publications

References 10 publications

Photon information efficiency limits in deep-space optical communications

Photon information efficiency limits in deep-space optical communications

Photon-efficient quantum key distribution using multiqubit time-bin encoding

Contact Info

Product

Resources

About