Intrinsically stable phase-modulated polarization encoding system for quantum key distribution

Liu, Xiaobao; Liao, Changjun; Jing-Long, Mi; Wang, Jindong; Liu, Songhao

doi:10.1016/j.physleta.2008.10.081

Cited by 11 publications

(11 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Alternatively, optoelectronic phase modulators were also employed for SOP generation without the need to split the signal [14, 18]. Nevertheless, in order to improve the stability of the SOP generation and detection stages in the QKD systems, fibre based Sagnac interferometers were proposed using phase modulators [10, 19]. In [20], a polarisation modulation scheme based in an inherently‐stable Sagnac interferometer is presented.…”

Section: Introductionmentioning

confidence: 99%

FPGA‐assisted state‐of‐polarisation generation for polarisation‐encoded optical communications

Muga

Ramos

Mantey

et al. 2020

IET Optoelectronics

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

FPGA‐assisted state‐of‐polarisation generation for polarisation‐encoded optical communications

Muga

Ramos

Mantey

et al. 2020

IET Optoelectronics

View full text Add to dashboard Cite

“…The first one is based on the balanced interferometers [17,18]. Two orthogonal polarization components enter different arms of the interferometer with the help of a polarization beam splitter, after that one of the components experiences a phase shift induced by the modulator.…”

Section: Introductionmentioning

confidence: 99%

“…As a result, two diagonal and two circular states can be generated. However, fiber Mach-Zendner interferometers are very sensitive and require phase stabilization [21], while interferometers with constant phase difference use freespace components that increase losses [17,18,22]. Jofre et al proposed a different approach to switching the SOP with the help of phase modulators [19].…”

Section: Introductionmentioning

confidence: 99%

Low loss QKD optical scheme for fast polarization encoding

Duplinskiy¹,

Ustimchik²,

Kanapin³

et al. 2017

Opt. Express

View full text Add to dashboard Cite

Abstract:We present a new optical scheme for BB84 protocol quantum key distribution (QKD). The proposed setup consists of a compact all-fiber polarization encoding optical scheme based on LiNbO 3 phase modulators, single laser source and two single-photon detectors. Optical scheme consists of standard telecommunication components and is suitable for both fiber and free-space quantum communication channels. Low losses (~2dB) in Bob's device increase both the key generation rate and distance limit. A new technique for solving polarization mode dispersion (PMD) issue in LiNbO 3 is implemented, allowing two crystals to neutralize the effect of each other. Several proofof-concept experiments have been conducted at 10 MHz repetition frequency over 50 km of standard optical fiber under laboratory conditions and over 30 km of urban fiber with high losses (13dB), which is a link within a QKD network. To achieve this, calibration algorithms have been developed, allowing the system to work autonomously and making it promising for practical applications.

show abstract

“…The desired performance for satellite-based QKD previously discussed in, e.g., Refs. 9 and 21 , requires that we consider the following factors when implementing BB84 QKD protocol 22 with the IPM: (1) Polarization encoding in the four non-orthogonal BB84 states 23 .…”

Section: Introductionmentioning

confidence: 99%

“…and 21 , requires that we consider the following factors when implementing BB84 QKD protocol 22 with the IPM: (1) Polarization encoding in the four non-orthogonal BB84 states 23 .…”

mentioning

confidence: 99%

Novel High-Speed Polarization Source for Decoy-State BB84 Quantum Key Distribution Over Free Space and Satellite Links

Yan

Meyer-Scott

Bourgoin

et al. 2013

J. Lightwave Technol.

View full text Add to dashboard Cite

To implement the BB84 decoy-state quantum key distribution (QKD) protocol over a lossy ground-satellite quantum uplink requires a source that has high repetition rate of short laser pulses, long term stability, and no phase correlations between pulses. We present a new type of telecom optical polarization and amplitude modulator, based on a balanced Mach-Zehnder interferometer configuration, coupled to a polarization-preserving sum-frequency generation (SFG) optical setup, generating 532 nm photons with modulated polarization and amplitude states. The weak coherent pulses produced by SFG meet the challenging requirements for long range QKD, featuring a high clock rate of 76 MHz, pico-second pulse width, phase randomization, and 98% polarization visibility for all states. Successful QKD has been demonstrated using this apparatus with full system stability up to 160 minutes and channel losses as high 57 dB 1 . We present the design and simulation of the hardware through the Mueller matrix and Stokes vector relations, together with an experimental implementation working in the telecom wavelength band. We show the utility of the complete system by performing high loss QKD simulations, and confirm that our modulator fulfills the expected performance.

show abstract

Intrinsically stable phase-modulated polarization encoding system for quantum key distribution

Cited by 11 publications

References 12 publications

FPGA‐assisted state‐of‐polarisation generation for polarisation‐encoded optical communications

FPGA‐assisted state‐of‐polarisation generation for polarisation‐encoded optical communications

Low loss QKD optical scheme for fast polarization encoding

Novel High-Speed Polarization Source for Decoy-State BB84 Quantum Key Distribution Over Free Space and Satellite Links

Contact Info

Product

Resources

About