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Spectral Shearing of Quantum Light Pulses by Electro-Optic Phase Modulation
Laura J Wright1, Michał Karpiński1,2, Christoph Söller1
1Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom.
Physical Review Letters
|January 28, 2017
Summary
We demonstrate a new method for frequency conversion of quantum light pulses using electro-optic Doppler shift. This technique preserves quantum properties and enables reconfigurable control of spectral modes for quantum information processing.
Area of Science:
- Quantum optics
- Integrated photonics
- Quantum information science
Background:
- Frequency conversion is crucial for quantum information encoding using spectral multiplexing.
- Integrated optics platforms offer robust solutions for quantum technologies.
Purpose of the Study:
- To present a deterministic linear-optics method for spectral shearing of quantum light pulses.
- To demonstrate the preservation of wave-packet coherence and quantum nature during frequency conversion.
Main Methods:
- Utilizing an electro-optic Doppler shift to induce frequency shear on quantum light.
- Applying the technique to heralded single-photon wave packets with shifts up to ±200 GHz.
- Showcasing scalability to arbitrary frequency shifts.
Main Results:
- Intrinsically deterministic spectral shearing of quantum light pulses.
- Preservation of wave-packet coherence and the quantum nature of light.
- Demonstration of reconfigurable control over spectral-temporal modes.
Conclusions:
- The developed technique offers a reconfigurable method for controlling quantum light's spectral-temporal structure.
- This approach could enable unitary operations for advanced quantum information processing.
- The method is well-suited for integrated-optics platforms.
