Measurement of work and heat in the classical and quantum regimes
- URL: http://arxiv.org/abs/2102.01493v2
- Date: Fri, 2 Jul 2021 09:39:37 GMT
- Title: Measurement of work and heat in the classical and quantum regimes
- Authors: Paolo Solinas, Mirko Amico and Nino Zangh\`i
- Abstract summary: We use the IBMQ quantum computer to implement the driven system's dynamics in a dissipative environment.
We observe a reduction of the pure quantum features of the energy exchange processes that we interpret as the emergence of the classical limit.
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- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Despite the increasing interest, the research field which studies the
concepts of work and heat at quantum level has suffered from two main
drawbacks: first, the difficulty to properly define and measure the work, heat
and internal energy variation in a quantum system and, second, the lack of
experiments. Here, we report a full characterization of the dissipated heat,
work and internal energy variation in a two-level quantum system interacting
with an engineered environment. We use the IBMQ quantum computer to implement
the driven system's dynamics in a dissipative environment. The experimental
data allow us to construct quasi-probability distribution functions from which
we recover the correct averages of work, heat and internal energy variation in
the dissipative processes. Interestingly, by increasing the environment
coupling strength, we observe a reduction of the pure quantum features of the
energy exchange processes that we interpret as the emergence of the classical
limit. This makes the present approach a privileged tool to study, understand
and exploit quantum effects in energy exchanges.
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