Journal
PHYSICAL REVIEW LETTERS
Volume 123, Issue 24, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.123.243601
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Funding
- National Key R&D Program of China [2018YFB0504300]
- National Natural Science Foundation of China
- Chinese Academy of Science
- Swedish Research Council
- Fannie and John Hertz Foundation
- Stanford Graduate Fellowship program
- Swedish Research Council [335-2014-7424]
- U.S. Department of Energy [DE-SC0012567]
- European Research Council [742104]
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By engineering and manipulating quantum entanglement between incoming photons and experimental apparatus, we construct single-photon detectors which cannot distinguish between photons of very different wavelengths. These color-erasure detectors enable a new kind of intensity interferometry, with potential applications in microscopy and astronomy. We demonstrate chromatic interferometry experimentally, observing robust interference using both coherent and incoherent photon sources.
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