Impulsively Excited Gravitational Quantum States: Echoes and Time-resolved Spectroscopy

Autor:	Tutunnikov, I., Rajitha, K. V., Voronin, A. Yu., Nesvizhevsky, V. V., Averbukh, I. Sh.
Rok vydání:	2020
Předmět:	Quantum Physics High Energy Physics - Phenomenology Physics - Atomic Physics Physics - Instrumentation and Detectors
Zdroj:	Phys. Rev. Lett. 126, 170403 (2021)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevLett.126.170403
Popis:	We theoretically study an impulsively excited quantum bouncer (QB) - a particle bouncing off a surface in the presence of gravity. A pair of time-delayed pulsed excitations is shown to induce a wave-packet echo effect - a partial rephasing of the QB wave function appearing at twice the delay between pulses. In addition, an appropriately chosen observable [here, the population of the ground gravitational quantum state (GQS)] recorded as a function of the delay is shown to contain the transition frequencies between the GQSs, their populations, and partial phase information about the wave packet quantum amplitudes. The wave-packet echo effect is a promising candidate method for precision studies of GQSs of ultra-cold neutrons, atoms, and anti-atoms confined in closed gravitational traps. Comment: 7 pages, 6 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2009.11755 Zobrazit plný text záznamu View this record from Arxiv