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Published on: November 11, 2013
Multipulse addressing of a Raman quantum memory: configurable beam splitting and efficient readout
1Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom. reimk@phys.ethz.ch
Physical Review Letters
|September 26, 2012
Summary
Researchers developed a novel Raman quantum memory that acts as a dynamically configurable beam splitter. This breakthrough enables scalable photonic quantum information processing (PQIP) for quantum computing and secure communication.
Area of Science:
- Quantum Information Science
- Optics and Photonics
- Quantum Computing
Background:
- Scalable photonic quantum information processing (PQIP) relies on quantum memories for photon storage.
- Beam splitters are fundamental components in PQIP for coherent coupling of optical modes.
Purpose of the Study:
- To integrate the functionalities of quantum memory and beam splitting into a single device.
- To enhance the scalability of photonic quantum information processing architectures.
Main Methods:
- Utilizing a Raman quantum memory.
- Employing multiple control pulses to address the memory.
- Demonstrating dynamic configuration of beam splitting properties.
Main Results:
- A coherent optical storage device with a large time-bandwidth product was achieved.
- The device functions as an array of dynamically configurable beam splitters.
- Arbitrarily high readout efficiency is possible.
Conclusions:
- This integrated device offers a pathway to fully scalable PQIP.
- Potential applications include quantum computation, long-distance quantum communication, and quantum metrology.
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