Heralded noiseless linear amplification and distillation of entanglement

By G. Xiang, Timothy C. Ralph, A. Lund, N. Walk, G. Pryde. 2009

271 citations recorded by the source corpus.

A noiseless linear amplifier for quantum states of an optical field is demonstrated. The amplifier is also used to enhance entanglement through a technique known as distillation. Such amplification and distillation may be useful for quantum cloning, metrology and communications.

Subfields: Artificial Intelligence, Atomic and Molecular Physics, and Optics

View Paper: https://www.semanticscholar.org/paper/36b7fb2fbeddf217fb3ccff38c2761ba69a4f6c1

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In Artificial Intelligence

In Atomic and Molecular Physics, and Optics

Citations in the corpus

Gaussian quantum information (2011, methodology): “…Gaussian LOCC operations (Eisert, Scheel, and Plenio, 2002; Fiuràšek, 2002a;Giedke andCirac, 2002), but canbe achieved using nonGaussian operations that map Gaussian states into Gaussian states (Browne et al., 2003), as recently demonstrated by Takahashi et al. (2010) and Xiang et al. (2010).”
A high-fidelity noiseless amplifier for quantum light states (2010, methodology): “If we insert state (8) into these formulae and set g1⁄4 2, we obtain”
Heralded noiseless amplification of a photon polarization qubit (2012, methodology): “We consider the input state ρin from equation (1), acted on by a pair of identical NLA stages employing detectors with no photon number resolution and efficiency δ, and single-photon sources of efficiency τ .”
Hybrid discrete- and continuous-variable quantum information (2014, methodology): “Another prominent method for CV entanglement distillation and error correction is the her-alded, noiseless linear ampliﬁer (NLA) [83, 84] which has been realized in diﬀerent settings [85–88].”
Tight finite-key analysis for quantum cryptography (2011, background): “Sources of this type have recently received increased attention since they can be used as heralded single photon sources [35, 36] and have applications in (device independent) quantum cryptography [37–39].”
Quantum feedback: theory, experiments, and applications (2014, background): “There have been a number of further experiments that have also demonstrated a phasemeasurement below the standard quantum limit without using entangled input states [315,316,318].”