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Linear optical controlled- NOT gate in the coincidence basis

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TLDR
In this article, the operation and tolerances of a quantum controlled-NOT gate for photonic qubits are described and a two-photon source is used for its demonstration.
Abstract
We describe the operation and tolerances of a nondeterministic, coincidence basis, quantum controlled-NOT gate for photonic qubits. It is constructed solely from linear optical elements and requires only a two-photon source for its demonstration. Its success probability is 1/9.

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Journal ArticleDOI

A Quantum Delayed-Choice Experiment

TL;DR: Strong nonlocal correlations are observed, which show that the photon must simultaneously behave both as a particle and as a wave.
Journal ArticleDOI

Experimental quantum-enhanced estimation of a lossy phase shift

TL;DR: In this article, it was shown that appropriately engineered quantum states outperform both standard and N00N states in the precision of phase estimation, even in the presence of losses and decoherence.
Repository

Bibliographic guide to the foundations of quantum mechanics and quantum information

TL;DR: A collection of references (papers, books, preprints, book reviews, Ph. D. thesis, patents, web sites, etc.), sorted alphabetically and classified by subject, on foundations of quantum mechanics and quantum information can be found in this article.
Journal ArticleDOI

Charge detection enables free-electron quantum computation.

TL;DR: It is shown that the exponential speedup of quantum algorithms is restored if single-charge measurements are added, which enable the construction of a CNOT (controlled NOT) gate for free fermions, using only beam splitters and spin rotations.
Journal ArticleDOI

Integrated Quantum Photonics

TL;DR: In this paper, a review of integrated waveguide circuits, lithographically fabricated for quantum optics, is presented, together with inherently stable interferometers with controlled phase shifts for quantum state preparation, manipulation, and measurement.
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