TY - JOUR
AU - 
AB - Tsuyoshi Yamamoto and Yasuhiro Tokura Faculty of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan (Dated: March 20, 2024) We investigate the heat flow of a qubit coupled to heat baths under continuous quantum measure- ment. In the steady-state limit, we show that heat always flows from the measurement apparatus into the qubit regardless of the measured qubit state and derive lower and upper bounds for the heat current between the qubit and the measurement apparatus. Furthermore, we study the transient dynamics of the heat current and the excess heat during the transient regime. I. INTRODUCTION Quantum measurement is a fundamental operation in quantum information processing and plays a pivotal role in the operation of quantum computers. In contrast to classical measurements, quantum measurements alter the state of the measured system, a phenomenon referred to as the backaction of quantum measurements [1, 2]. It has spurred extensive research into phenomena unique to the backaction, such as measurement-induced phase transitions [3–7] and non-Hermitian dynamics [8–11]. Besides changing the state of the measured system, FIG. 1. Setup of continuous quantum measurement of a qubit quantum measurements can generate heat [12–15]. The coupled to heat baths with temperatures T 
TI - Heat flow from a measurement apparatus monitoring a dissipative qubit
JF - Physical Review Research
DO - 10.1103/physrevresearch.6.013300
DA - 2024-03-19
UR - https://www.deepdyve.com/lp/unpaywall/heat-flow-from-a-measurement-apparatus-monitoring-a-dissipative-qubit-9UN4ErBaqD
DP - DeepDyve
ER -