Optical quantum memory

By Alexander I. Lvovsky, Barry C. Sanders, Wolfgang Tittel. 2009

1,310 citations recorded by the source corpus.

Quantum memory is essential for the development of many devices in quantum information processing, including a synchronization tool that matches various processes within a quantum computer, an identity quantum gate that leaves any state unchanged, and a mechanism to convert heralded photons to on-demand photons. In addition to quantum computing, quantum memory will be instrumental for implementing long-distance quantum communication using quantum repeaters. The importance of this basic quantum gate is exemplified by the multitude of optical quantum memory mechanisms being studied, such as optical delay lines, cavities and electromagnetically induced transparency, as well as schemes that rely on photon echoes and the off-resonant Faraday interaction. Here, we report on state-of-the-art developments in the field of optical quantum memory, establish criteria for successful quantum memory and detail current performance levels.

Subfields: Artificial Intelligence, Atomic and Molecular Physics, and Optics, Electrical and Electronic Engineering

View Paper: https://www.semanticscholar.org/paper/cbc8591d17c4cb483a21a10589f1a20780205ae6

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Citations in the corpus

Cavity-based quantum networks with single atoms and optical photons (2014, background): “These requirements basically mean that the nodes should operate as a quantum memory for single photons [see e.g. (Lvovsky et al., 2009)].”
Quantum Secure Direct Communication with Quantum Memory. (2016, background): “iple experimental demonstration. However, for a practical application, a quantum memory is greatly needed because it is robust against decoherence and convertible to quantum states of light on demand [21, 22, 23, 24, 25, 26], which indicates effective control for transferring a message in the time d”
Electromagnetically induced transparency in optical microcavities (2017, background): “The slow and stopped light is important in optical networks [7] for implementing optical buffer, and it is also applicable for quantum networks [8] in building quantum memory [9, 10].”
Nanoantennas for visible and infrared radiation (2011, background): “In this picture photons are considered as ‘flying qubits’, while the atoms and molecules act as immobilized qubits [27].”
Quantum memories: emerging applications and recent advances (2015, background): “ARTICLE HISTORY Received 6 November 2015 Accepted 27 December 2015 KEYWORDS Quantummemories; light-matter interfaces; optical quantum information processing”
Quantum storage of entangled telecom-wavelength photons in an erbium-doped optical fibre (2014, methodology): “For the detector used for the majority of the measurements [2] we found the system detection efficiency to be ∼60%, which includes transmission loss through coiled fibres inside the cryostat and splice loss.”
Near-deterministic quantum teleportation and resource-efficient quantum computation using linear optics and hybrid qubits (2011, background): “Finally, as optical hybrid qubits are interconvertible with photon or coherent-state qubits by inline operations, one can construct hybrid architectures by integrating some devices developed in various approaches, such as quantum memories [26, 27] and photonic chips [28, 29].”
A quantum memory for orbital angular momentum photonic qubits (2013, methodology): “Based on a single large ensemble of cold cesium atoms and the dynamic electromagnetically-induced transparency protocol (EIT) [8], our device enables us to store and recall superpositions of Laguerre-Gaussian modes of opposite helicities in the single-photon regime.”