Detection of Microwave Ultrasonics by Phonon-Photon Double Quantum Transitions

The frequency dependence of phonon-photon double-quantum transitions in MgO: ${\mathrm{Fe}}^{+2}$ was investigated by using 8.7-GHz photons to detect 9.3-, 4.7-, and 3.1-GHz phonons. The transition probability for simultaneous absorption of both a phonon and a photon markedly decreased with decreasing phonon frequency. In the case of 4.7- and 3.1-GHz phonons, a new type of phonon-photon transition was observed.The frequency dependence of phonon-photon double-quantum transitions in MgO:${\mathrm{Fe}}^{+2}$ was investigated by using 8.7-GHz photons to detect 9.3-, 4.7-, and 3.1-GHz phonons. The transition probability for simultaneous absorption of both a phonon and a photon markedly decreased with decreasing phonon frequency. In the case of 4.7- and 3.1-GHz phonons, a new type of phonon-photon transition was observed.

Physical Review LettersSep 30, 19682 citations

Interaction of two-photon NOON state with ultrasonic wave

Piotr Kwiek

Abstract The paper presents a classical and quantum description of the diffraction of two light beams incident on an ultrasonic wave at a positive and negative Bragg angle. The quantum description of the interaction with the ultrasonic wave was carried out for the two-photon NOON state. Study of diffraction of entangled pair of photon was performed in Mach–Zehnder interferometer wherein an output beam splitter is replaced by ultrasonic wave. It has been shown theoretically and experimentally that when a pair of photons generated from a parametric down-conversion was incident on two input ports of Mach–Zehnder interferometer with an acousto-optical beam splitter, then two-photon beats are observed at the output of the interferometer. The phenomenon of two-photon beats with the double frequency of the ultrasonic wave is the result of the Doppler effect on the ultrasonic wave. Time-correlated single-photon counting method was used to register the phenomenon of two-photon beats. The method of calibrating the interferometer with the use of an additional light source was presented in detail, which guarantees the observation of interaction of two-photon NOON state with ultrasonic wave. Graphical abstractAbstract The paper presents a classical and quantum description of the diffraction of two light beams incident on an ultrasonic wave at a positive and negative Bragg angle. The quantum description of the interaction with the ultrasonic wave was carried out for the two-photon NOON state. Study of diffraction of entangled pair of photon was performed in Mach–Zehnder interferometer wherein an output beam splitter is replaced by ultrasonic wave. It has been shown theoretically and experimentally that when a pair of photons generated from a parametric down-conversion was incident on two input ports of Mach–Zehnder interferometer with an acousto-optical beam splitter, then two-photon beats are observed at the output of the interferometer. The phenomenon of two-photon beats with the double frequency of the ultrasonic wave is the result of the Doppler effect on the ultrasonic wave. Time-correlated single-photon counting method was used to register the phenomenon of two-photon beats. The method of calibrating the interferometer with the use of an additional light source was presented in detail, which guarantees the observation of interaction of two-photon NOON state with ultrasonic wave. Graphical abstract

The European Physical Journal DSep 1, 20223 citations

Generation of Nonclassical States of Microwave Radiation via Single Photon Detection

Emily Pritchett, Luke C. G. Govia, Frank K. Wilhelm

Bulletin of the American Physical SocietyMar 19, 20130 citations

The frequency dependence of phonon-photon double-quantum transitions in MgO:

{\mathrm{Fe}}^{+2}

was investigated by using 8.7-GHz photons to detect 9.3-, 4.7-, and 3.1-GHz phonons. The transition probability for simultaneous absorption of both a phonon and a photon markedly decreased with decreasing phonon frequency. In the case of 4.7- and 3.1-GHz phonons, a new type of phonon-photon transition was observed.