Polarization squeezing and multipartite entanglement of triphoton states

Jin, Guangri; Luo, Shunlong; Liu, Y. C.; Jing, Hui; Liu, W. M.

doi:10.1364/josab.27.00a105

Cited by 11 publications

(6 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To achieve any squeezing, it requires N χ ≥ Γ, where N is the particle number. Quantum-limited metrology in the presence of collisional dephasing was studied in [281,242], although these works are associated with nonlinear estimation scheme, their analysis can also be extended to the discussion of spin squeezing. Otherwise, a detailed analysis of decoherence in quantum light-atom interfaces, such as QND-type interactions, was studied in [282].…”

Section: Decoherence and Spin Squeezing Generationmentioning

confidence: 99%

“…In this section, we first introduce the QFI [236,172,237,238], which determines the precision of the parameter estimation. Then, we discuss the relation between QFI and spin squeezing [239,240,241,242]. Finally, we discuss the applications of spin squeezing and QFI in entanglement enhanced quantum metrology, where the Ramsey and Mach-Zehnder interferometers are discussed.…”

Section: Spin Squeezing Fisher Information and Quantum Metrologymentioning

confidence: 99%

See 1 more Smart Citation

Quantum spin squeezing

et al. 2011

View full text Add to dashboard Cite

This paper reviews quantum spin squeezing, which characterizes the sensitivity of a state with respect to an SU(2) rotation, and is significant for both entanglement detection and high-precision metrology. We first present various definitions of spin squeezing parameters, explain their origin and properties for typical states, and then discuss spin-squeezed states produced with the Ising and the nonlinear twisting Hamiltonians. Afterwards, we explain correlations and entanglement in spin-squeezed states, as well as the relations between spin squeezing and quantum Fisher information, where the latter plays a central role in quantum metrology. We also review the applications of spin squeezing for detecting quantum chaos and quantum phase transitions, as well as the influence of decoherence on spin-squeezed states. Finally, several experiments are discussed including: producing spin squeezed states via particle collisions in Bose-Einstein condensates, mapping photon squeezing onto atomic ensembles, and quantum non-demolition measurements.Comment: 99 pages, 25 figure

show abstract

Section: Decoherence and Spin Squeezing Generationmentioning

confidence: 99%

Section: Spin Squeezing Fisher Information and Quantum Metrologymentioning

confidence: 99%

Quantum spin squeezing

et al. 2011

View full text Add to dashboard Cite

show abstract

“…[32][33][34]). The spin versions of these Husimi Q functions have a similar limitation to those of the continuous case.…”

Section: Discussionmentioning

confidence: 99%

Towards a complete and continuous Wigner function for an ensemble of spins or qubits

et al. 2012

View full text Add to dashboard Cite

We present a new quasi-probability distribution function for ensembles of spin-half particles or qubits that has many properties in common with Wigner's original function for systems of continuous variables. We show that this function provides clear and intuitive graphical representation of a wide variety of states, including Fock states, spin-coherent states, squeezed states, superpositions and statistical mixtures. Unlike previous attempts to represent ensembles of spins/qubits, this distribution is capable of simultaneously representing several angular momentum shells.

show abstract

“…Recently, Shalm et al [18] succeeded in preparing maximally entangled NOON states of triphotons. Jin et al [30] also analyzed the preparation process in detail, calculating the mean spin, the squeezing factor, the entanglement degree, and the relation between the parameters and triphotons' characteristics, which gives a good explanation of the work of Shalm et al…”

mentioning

confidence: 99%

“…where T ¼ T V ∕T H denotes the transmissivity ratio of photons in the horizontal and vertical modes [18] . After that, a QWP is adopted to rotate the polarization state into the basis ofŜ 3 , producing a new state [30] :…”

mentioning

confidence: 99%

Quantum Fisher information of triphoton states

Huang

2016

中国光学快报

View full text Add to dashboard Cite

Based on the standard angular momentum theory, we create an experiment on preparing maximally pathentangled ðjN ; 0i þ j0; N iÞ 2 (NOON) states of triphotons. In order to explain the error between the theoretical and experimental data, we consider the background events during the experiment, and observe their effect on the uncertainty inŜ 1. Afterwards, we calculate the quantum Fisher information (QFI) of the states to evaluate their potential applications in quantum metrology. Our results show that by adding the appropriate background terms, the theoretical data of the produced states matches well with the experimental data. In this case, the QFI of the states is lower than maximally entangled NOON states, but still higher than a classical state.

show abstract

Polarization squeezing and multipartite entanglement of triphoton states

Cited by 11 publications

References 30 publications

Quantum spin squeezing

Quantum spin squeezing

Towards a complete and continuous Wigner function for an ensemble of spins or qubits

Quantum Fisher information of triphoton states

Contact Info

Product

Resources

About