# Gaussian quantum information

@article{Weedbrook2012GaussianQI, title={Gaussian quantum information}, author={Christian Weedbrook and Stefano Pirandola and Ra{\'u}l Garc{\'i}a-Patr{\'o}n and Nicolas J. Cerf and Timothy C. Ralph and Jeffrey H. Shapiro and Seth Lloyd}, journal={Reviews of Modern Physics}, year={2012}, volume={84}, pages={621-669} }

The science of quantum information has arisen over the last two decades centered on the manipulation of individual quanta of information, known as quantum bits or qubits. Quantum computers, quantum cryptography, and quantum teleportation are among the most celebrated ideas that have emerged from this new field. It was realized later on that using continuous-variable quantum information carriers, instead of qubits, constitutes an extremely powerful alternative approach to quantum information…

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## References

SHOWING 1-10 OF 682 REFERENCES

Quantum information with Gaussian states

- Physics
- 2007

Quantum optical Gaussian states are a type of important robust quantum states which are manipulatable by the existing technologies. So far, most of the important quantum information experiments are…

Continuous-variable quantum information processing

- Computer Science, Physics
- 2010

This paper is addressing the three main stages of a quantum information system; the preparation stage where quantum information is encoded into CVs of coherent states and single-photon states, the processing stage whereCV information is manipulated to carry out a specified protocol and a detection stage where CV information is measured using homodyne detection or photon counting.

Quantum Communication with Continuous Variables

- Computer Science
- 2002

The bottom line of this work is that a particular kind of entanglement, namely that based on continuous quantum variables, can be created relatively easily, and only squeezers and beam splitters are required to entangle arbitrarily many electromagnetic modes.

Introduction to Optical Quantum Information Processing

- Physics
- 2010

Quantum information processing offers fundamental improvements over classical information processing, such as computing power, secure communication, and high-precision measurements. However, the best…

Quantum information with continuous variables

- Computer ScienceConference Digest. 2000 International Quantum Electronics Conference (Cat. No.00TH8504)
- 2000

This work discusses new work that shows how entanglement of the Bell-type can be observed in continuous variable, homodyne measurement schemes, and contrasts the various classical limits which emerge from the different ways of assessing teleportation.

Limitations of quantum computing with Gaussian cluster states

- Physics
- 2010

We discuss the potential and limitations of Gaussian cluster states for measurement-based quantum computing. Using a framework of Gaussian-projected entangled pair states, we show that no matter what…

From quantum cloning to quantum key distribution with continuous variables: a review (Invited)

- Physics
- 2007

Quantum information processing with continuous variables is a paradigm that has attracted a growing interest over the past years, partly as a consequence of the prospects for high-rate quantum…

Optical quantum memory

- Physics
- 2009

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…

Quantum teleportation with continuous variables: A survey

- Computer Science, Physics
- 2006

The concepts of quantum entanglement and teleportation in the CV framework are developed by analogy with the qubit-based approach by addressing the study of CV quantum teleportation networks where more users share a multipartite state and an arbitrary pair of them performs quantum teleportation.

Preparation of non-local superpositions of quasi-classical light states

- Physics
- 2009

Quantum superpositions of coherent light waves offer several advantages for quantum-information processing compared to single photons. A novel scheme for generating these so-called Schrodinger-cat…