Progressive field-state collapse and quantum non-demolition photon counting
Article Abstract:
The step-by-step collapse by non-destructively measuring the photon number of a field stored in a cavity is reported. The atoms behaving as microscopic clocks cross the cavity successively and the suppression of the photon number spread is demonstrated by correlations between repeated measurements.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2007
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Quantum jumps of light recording the birth and death of a photon in a cavity
Article Abstract:
An experiment is described that is used to observe the quantum jumps in the photon number. The application of a quantum non-demolition (QND) procedure to mesoscopic fields with tens of photons might open new perspectives for exploring the quantum-to-classical boundary.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2007
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Atomic recorder for light quanta
Article Abstract:
The study demonstrates a quantum memory, in which the state of a faint laser pulse is faithfully copied onto an ensemble of atoms. Quantum systems can be in a superposition of states, allowing quantum bits to take two logical values at once.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2004
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