10 papers
Fundamental bound on Wigner negativity generation from environmental collisions
Isaac Layton, Takahiro Sagawa, Ken Funo
Beyond quadratic potentials, classical evolution laws are typically thought to arise from quantum theory as an approximate description. Here we show that classical evolution laws c…
Quantum enhancement of information-mediated energy transfer
Shotaro Oki, Yuki Kadono, Kaito Tojo +2
Thermodynamics of information identifies information flow as a thermodynamic resource, but whether quantum coherence and collective coupling can enhance it at low entropy-productio…
Thermodynamic uncertainty relation under continuous measurement and feedback with quantum-classical-transfer entropy
Kaito Tojo, Takahiro Sagawa, Ken Funo
We derive a thermodynamic uncertainty relation (TUR) under quantum continuous measurement and feedback control. By incorporating the quantum-classical-transfer entropy, which quant…
A levitated nano-accelerometer sensitized by quantum quench
M. Kamba, S. Otabe, K. Funo +2
We realize a nanoscale accelerometer exploiting the nonequilibrium dynamics of a nanoparticle near the quantum ground state. We explore the dynamics after quenching the trapping po…
Optimizing optimal transport: Role of final distributions in finite-time thermodynamics
Kaito Tojo, Rihito Nagase, Ken Funo +1
Performing thermodynamic tasks within finite time while minimizing thermodynamic costs is a central challenge in stochastic thermodynamics. Here, we develop a unified framework for…
Thermodynamic uncertainty relation for feedback cooling
Kousuke Kumasaki, Kaito Tojo, Takahiro Sagawa +1
Feedback cooling enables a system to achieve low temperatures through measurement-based control. Determining the thermodynamic cost required to achieve the ideal cooling efficiency…
Thermodynamic approach to quantum cooling limit of continuous Gaussian feedback
Kousuke Kumasaki, Toshihiro Yada, Ken Funo +1
Feedback cooling plays a critical role in stabilizing quantum systems and achieving low temperatures, where a key question is to determine the fundamental thermodynamic limits on c…
Thermodynamic speed limit for non-adiabatic work and its classical-quantum decomposition
Aoi Yamauchi, Rihito Nagase, Kaixin Li +2
Understanding the fundamental constraint on work far beyond the adiabatic regime is crucial to investigating fast and efficient energy extraction or consumption processes. In this…
Optimal Finite-time Maxwell's Demons in Langevin Systems
Takuya Kamijima, Asuka Takatsu, Ken Funo +1
We identify the optimal protocols to achieve the minimal entropy production in finite-time information exchange processes in Langevin systems, on the basis of optimal transport the…
Finite-time thermodynamic bounds and tradeoff relations for information processing
Takuya Kamijima, Ken Funo, Takahiro Sagawa
In thermal environments, information processing requires thermodynamic costs determined by the second law of thermodynamics. Information processing within finite time is particular…