Quantum Communication with Ultrafast Time-Bin Qubits

@article{Bouchard2021QuantumCW,
  title={Quantum Communication with Ultrafast Time-Bin Qubits},
  author={Fr{\'e}d{\'e}ric Bouchard and Duncan England and Philip J. Bustard and Khabat Heshami and Benjamin J. Sussman},
  journal={PRX Quantum},
  year={2021}
}
The photonic temporal degree of freedom is one of the most promising platforms for quantum communication over fiber networks and free-space channels. In particular, time-bin states of photons are robust to environmental disturbances, support high-rate communication, and can be used in high-dimensional schemes. However, the detection of photonic time-bin states remains a challenging task, particularly for the case of photons that are in a superposition of different time-bins. Here, we… 
View PDF on arXiv
4 Citations
Methods Citations
2

Figures from this paper

4 Citations

Fast and Simple One-Way High-Dimensional Quantum Key Distribution

A novel scheme forber-based arbitrary-dimensional QKD, based on the most popular commercial hardware for binary time bins encoding, exhibiting a two-fold enhancement of the secret key rate in comparison to the binary Coherent One Way (COW) protocol, without introducing any hardware modifications.

Electro-Optical Sampling of Single-Cycle THz Fields with Single-Photon Detectors

Electro-optical sampling of Terahertz fields with ultrashort pulsed probes is a well-established approach for directly measuring the electric field of THz radiation. This technique usually relies on…

Performance analysis of inter-satellite round-robin differential-phase-shift quantum key distribution

The results indicate that OAM encoding is preferable to time-bin encoding only under the circumstances where a low dimension and a large receiver aperture are used, but it is found that TM encoding is the best encoding scheme in RRDPS QKD over an inter-satellite channel.

Single-cycle THz-field electro-optical sampling with single-photon detectors

Terahertz time-domain spectroscopy (THz-TDS) using electro-optic sampling and ultrashort pulsed probes is a well-established technique for directly measuring the electric field of THz radiation.…

References

SHOWING 1-10 OF 32 REFERENCES

Time-bin-to-polarization conversion of ultrafast photonic qubits

The encoding of quantum information in photonic time-bin qubits is apt for long distance quantum communication schemes. In practice, due to technical constraints such as detector response time, or…

Time-bin entangled qubits for quantum communication created by femtosecond pulses

We create pairs of nondegenerate time-bin entangled photons at telecom wavelengths with ultrashort pump pulses. Entanglement is shown by performing Bell kind tests of the Franson type with…

Genuine time-bin-encoded quantum key distribution over a turbulent depolarizing free-space channel.

The viability of time-bin quantum communication over long-distance free-space channels over multi-mode, turbulent, or depolarizing channels is shown, which will simplify direct fiber/free-space interfaces and enable new approaches for practical free- space quantum communication.

Direct Characterization of Ultrafast Energy-Time Entangled Photon Pairs.

This work implements ultrafast photon counters based on nonlinear interactions and strong femtosecond laser pulses to probe energy-time entanglement in this important regime using uncertainty relations and the direct observation of nonlocal dispersion cancellation on ultrafast time scales.

Temporal-mode measurement tomography of a quantum pulse gate

Encoding quantum information in the photon temporal mode (TM) offers a robust platform for high-dimensional quantum protocols. The main practical challenge, however, is to design a device that…

High-dimensional quantum key distribution based on multicore fiber using silicon photonic integrated circuits

This work proposes and experimentally demonstrates a high-dimensional quantum key distribution protocol based on space division multiplexing in multicore fiber using silicon photonic integrated lightwave circuits, and achieves the first silicon chip-to-chip decoy-state high- dimensional QKD, suitable for longer transmission distance with higher secret key rate, better resilience to noise, and higher information efficiency.

Decoy-state quantum key distribution with polarized photons over 200 km.

A novel and economic way of synchronization method is designed and incorporated into the system, which allows to work at a low frequency of 40kHz and removes the use of highly precise clock.

Terahertz-bandwidth switching of heralded single photons.

Optically induced ultrafast switching of single photons is demonstrated by rotating the photon polarization via the Kerr effect in a commercially available single-mode fiber, highlighting a simple device capable of both high-bandwidth operations and preservation of single-photon properties for applications in photonic quantum processing and ultrafast time-gating or switching.

High-dimensional quantum cryptography with twisted light

A proof-of-principle experiment that indicates the feasibility of high-dimensional QKD based on the transverse structure of the light field allowing for the transfer of more than 1 bit per photon and demonstrates that, in addition to having an increased information capacity, multilevel QK D systems based on spatial-mode encoding can be more resilient against intercept-resend eavesdropping attacks.

Experimental investigation of high-dimensional quantum key distribution protocols with twisted photons

An experimental platform based on high-dimensional orbital angular momentum states of single photons that enables implementation of multiple quantum key distribution protocols with a single experimental apparatus is developed.