Experimental demonstration of delayed-choice decoherence suppression
SCIE
SCOPUS
- Title
- Experimental demonstration of delayed-choice decoherence suppression
- Authors
- Lee, JC; Lim, HT; Hong, KH; Jeong, YC; Kim, MS; Kim, YH
- Date Issued
- 2014-07
- Publisher
- NATURE PUBLISHING
- Abstract
- Wheeler's delayed-choice experiment illustrates vividly that the observer plays a central role in quantum physics by demonstrating that complementarity or wave-particle duality can be enforced even after the photon has already entered the interferometer. The delayed-choice quantum eraser experiment further demonstrates that complementarity can be enforced even after detection of a quantum system, elucidating the foundational nature of complementarity in quantum physics. However, the applicability of the delayed-choice method for practical quantum information protocols continues to be an open question. Here, we introduce and experimentally demonstrate the delayed-choice decoherence suppression protocol, in which the decision to suppress decoherence on an entangled two-qubit state is delayed until after the decoherence and even after the detection of a qubit. Our result suggests a new way to tackle Markovian decoherence in a delayed manner, applicable for practical entanglement distribution over a dissipative channel.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/11785
- DOI
- 10.1038/NCOMMS5522
- ISSN
- 2041-1723
- Article Type
- Article
- Citation
- NATURE COMMUNICATIONS, vol. 5, 2014-07
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