期刊
PRX QUANTUM
卷 3, 期 1, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PRXQuantum.3.010332
关键词
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资金
- High Throughput Secure Networks Challenge Program at the National Research Council of Canada
- Natural Sciences and Engineering Research Council of Canada
- University of Ottawa-NRC Joint Centre for Extreme Photonics
The photonic temporal degree of freedom is a promising platform for quantum communication. Despite the challenges in detecting photonic time-bin states, the feasibility of picosecond time-bin states for quantum communication has been experimentally demonstrated.
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 experimentally demonstrate the feasibility of picosecond time-bin states of light, known as ultrafast time bins, for applications in quantum communications. With the ability to measure time-bin superpositions with excellent phase stability, we enable the use of temporal states in efficient quantum key distribution protocols such as the BB84 protocol.
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