Single Photons by Quenching the Vacuum

Sanchez-Burillo, E. ; Martin-Moreno, L. ; Garcia-Ripoll, J.J. ; Zueco, D. (Universidad de Zaragoza)

Resumen: Heisenberg's uncertainty principle implies that the quantum vacuum is not empty but fluctuates. These fluctuations can be converted into radiation through nonadiabatic changes in the Hamiltonian. Here, we discuss how to control this vacuum radiation, engineering a single-photon emitter out of a two-level system (2LS) ultrastrongly coupled to a finite-band waveguide in a vacuum state. More precisely, we show the 2LS nonlinearity shapes the vacuum radiation into a non-Gaussian superposition of even and odd cat states. When the 2LS bare frequency lays within the band gaps, this emission can be well approximated by individual photons. This picture is confirmed by a characterization of the ground and bound states, and a study of the dynamics with matrix-product states and polaron Hamiltonian methods.

Idioma: Inglés

DOI: 10.1103/PhysRevLett.123.013601

Año: 2019

Publicado en: Physical Review Letters 123, 1 (2019), 013601 [6 pp]
ISSN: 0031-9007

Factor impacto JCR: 8.385 (2019)

Categ. JCR: PHYSICS, MULTIDISCIPLINARY rank: 6 / 85 = 0.071 (2019) - Q1 - T1

Factor impacto SCIMAGO: 3.588 - Physics and Astronomy (miscellaneous) (Q1)

Financiación: info:eu-repo/grantAgreement/ES/DGA/CAM PRICYT/QUITEMAD+S2013-CE-2801
Financiación: info:eu-repo/grantAgreement/ES/DGA/Q-MAD
Financiación: info:eu-repo/grantAgreement/EC/H2020/742102/EU/Quantum Emitters in non-conventional baths/QUENOCOBA
Financiación: info:eu-repo/grantAgreement/ES/MCIU/MAT2017-88358-C3-1-R
Financiación: info:eu-repo/grantAgreement/ES/MINECO/FIS2015-70856-P
Financiación: info:eu-repo/grantAgreement/EUR/QUANTERA/SUMO

Tipo y forma: Article (Published version)

Área (Departamento): Área Física Materia Condensada (Dpto. Física Materia Condensa.)