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Storage of multiple single-photon pulses emitted from a quantum dot in a solid-state quantum memory.
Jian-Shun Tang1,2, Zong-Quan Zhou1,2, Yi-Tao Wang1,2
1Key Laboratory of Quantum Information, University of Science and Technology of China, CAS, Hefei, Anhui 230026, China.
Nature Communications
|October 16, 2015
Summary
This study demonstrates a stable, scalable quantum repeater using solid-state quantum memory for efficient entanglement distribution. It successfully stores single photons and utilizes multi-temporal modes to enhance the distribution rate.
Area of Science:
- Quantum Information Science
- Quantum Communication Technology
- Solid-State Physics
Background:
- Quantum repeaters are essential for long-distance entanglement distribution, overcoming optical losses.
- Existing protocols often focus on entanglement-distribution rates, with multi-photon elimination and multi-mode quantum memory showing promise.
Purpose of the Study:
- To demonstrate a novel quantum repeater protocol utilizing solid-state quantum memory.
- To enhance entanglement-distribution rates by storing deterministic single photons and employing multi-temporal modes.
Main Methods:
- Storage of deterministic single photons from a quantum dot in a polarization-maintaining solid-state quantum memory.
- Demonstration of multi-temporal-mode memory with single-photon pulses, ensuring at most one photon per pulse.
Main Results:
- Successful storage of deterministic single photons.
- Demonstration of multi-temporal-mode quantum memory capabilities (1, 20, and 100 pulses).
- Elimination of multi-photons, with each pulse containing a maximum of one photon.
Conclusions:
- The developed all-solid-state configuration offers enhanced stability and scalability for quantum repeaters.
- This work contributes to the construction of efficient quantum repeaters using practical, solid-state devices.
