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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

Recent progress in single-photon and entangled-photon generation and applications

TL;DR: In this article, the authors review the recent progress in single-photon/entangled-quantum emitters and their applications: heralded singlephoton sources using parametric downconversion and their application to quantum key distribution.
Journal ArticleDOI

Robust Architecture for Programmable Universal Unitaries.

TL;DR: It is shown that the scheme is universal even when the block's transfer matrices are chosen at random, making it virtually insensitive to errors, and the placement of the variable elements can be arbitrary, so that the Scheme is not bound to specific topologies.
Journal ArticleDOI

Single-photon three-qubit quantum logic using spatial light modulators

TL;DR: An experimental demonstration of three-qubit single-photon, linear, deterministic quantum gates that exploit photon polarization and the two-dimensional spatial-parity-symmetry of the transverse single-Photon field are demonstrated.
Journal ArticleDOI

Intrinsically narrowband pair photon generation in microstructured fibres

TL;DR: In this article, the authors study the tailoring of photon spectral properties generated by four-wave mixing in a birefringent photonic crystal fiber (PCF), and compare results from modelling the PCF to these experiments and analyse photon purities.
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