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Generation of Large-Amplitude Coherent-State Superposition via Ancilla-Assisted Photon Subtraction
Open accessAbstract
We propose and demonstrate a novel method to generate a large-amplitude coherent-state superposition (CSS) via ancilla-assisted photon subtraction. The ancillary mode induces quantum interference of indistinguishable processes in an extended space, widening the controllability of quantum superposition at the conditional output. We demonstrate this by a simple time-separated two-photon subtraction from continuous wave squeezed light. We observe the largest CSS of traveling light ever reported without correcting any imperfections, which will enable various quantum information applications with CSS states.
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Citations
Cited by
O'Brien, J. L., Furusawa, A., & Vučković, J. (2009) · Nature Photonics · doi:10.1038/nphoton.2009.229 · Cited by 2,388
Self-citationContinuous-variable optical quantum-state tomography
Lvovsky, A. I., & Raymer, M. G. (2009) · Reviews of Modern Physics · doi:10.1103/revmodphys.81.299 · Cited by 1,123
Quantum metrology with entangled coherent states
Joo, J., Munro, W. J., & Spiller, T. P. (2011) · Physical Review Letters · doi:10.1103/physrevlett.107.083601 · Cited by 526
Hybrid discrete- and continuous-variable quantum information
Andersen, U. L., Neergaard-Nielsen, J. S., van Loock, P., & Furusawa, A. (2015) · Nature Physics · doi:10.1038/nphys3410 · Cited by 437
Self-citationModes and states in quantum optics
Fabre, C., & Treps, N. (2020) · Reviews of Modern Physics · doi:10.1103/revmodphys.92.035005 · Cited by 312
Metadata
- Authors
- Takahashi, H., Wakui, K., Suzuki, S., Takeoka, M., Hayasaka, K., Furusawa, A., & Sasaki, M.
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 2008-12-04
- Volume
- 101
- Issue
- 23
- Pages
- 233605-233605
- ISSN
- 0031-9007 (ISSN-L)
- 1079-7114
- OpenAlex
- W1987572537
- Cited by
- 252
- References
- 0
- FWCI
- 22.26
- Type
- journal article
- Language
- en
- Open access
- green
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- Takahashi, H., Wakui, K., Suzuki, S., Takeoka, M., Hayasaka, K., Furusawa, A., & Sasaki, M. (2008). Generation of Large-Amplitude Coherent-State Superposition via Ancilla-Assisted Photon Subtraction. Physical Review Letters. https://doi.org/10.1103/physrevlett.101.233605
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