Superabsorption

Ad Lagendijk

Shingo Kamimura, Hideaki Hakoshima, Yuichiro Matsuzaki +2 more

We propose a quantum enhanced heat engine with entanglement. The key feature of our scheme is to utilize a superabsorption that exhibits an enhanced energy absorption by entangled qubits. While a conventional engine with separable qubits provides a scaling of a power $P = \Theta (N)$ for given $N$ qubits, our engine using the superabsorption provides a power with a quantum scaling of $P = \Theta(N^2)$ at a finite temperature. Our results pave the way for a new generation of quantum heat engines.

Shunsuke Kamimura, Hideaki Hakoshima, Yuichiro Matsuzaki +2 more

We propose a quantum-enhanced heat engine with entanglement. The key feature of our scheme is superabsorption, which facilitates enhanced energy absorption by entangled qubits. Whereas a conventional engine with N separable qubits provides power with a scaling of P=Θ(N), our engine uses superabsorption to provide power with a quantum scaling of P=Θ(N^{2}). This quantum heat engine also exhibits a scaling advantage over classical ones composed of N-particle Langevin systems. Our work elucidates the quantum properties allowing for the enhancement of performance.

Mikio Katayama

Bond-selective chemistry, infrared multiphoton dissociation, relaxation time, absorption cross section, excitation rate, superradiance, spontaneous radiative transition, superabsorption