Vacuum Squeezing of Solids: Macroscopic Quantum States Driven by Light Pulses
- 14 March 1997
- journal article
- other
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 275 (5306) , 1638-1640
- https://doi.org/10.1126/science.275.5306.1638
Abstract
Femtosecond laser pulses and coherent two-phonon Raman scattering were used to excite KTaO3 into a squeezed state, nearly periodic in time, in which the variance of the atomic displacements dips below the standard quantum limit for half of a cycle. This nonclassical state involves a continuum of transverse acoustic modes that leads to oscillations in the refractive index associated with the frequency of a van Hove singularity in the phonon density of states.Keywords
This publication has 11 references indexed in Scilit:
- Generating coherent THz phonons with light pulsesSolid State Communications, 1997
- Squeezed Phonon States: Modulating Quantum Fluctuations of Atomic DisplacementsPhysical Review Letters, 1996
- Squeezed oscillatory states in extended exciton-phonon systemsPhysical Review B, 1996
- Classical Squeezing of an Oscillator for Subthermal Noise OperationPhysical Review Letters, 1995
- Correlated squeezed-state approach for the ground state of a system with strong electron-phonon interactionPhysical Review B, 1994
- Time-resolved vibrational spectroscopy in the impulsive limitChemical Reviews, 1994
- Quantum-optical properties of polariton wavesPhysical Review B, 1991
- Squeezing via frequency jumpOptics Communications, 1986
- Two-photon coherent states of the radiation fieldPhysical Review A, 1976
- Neutron-Scattering Analysis of the Linear-Displacement Correlations in KTaPhysical Review B, 1972