Single-shot energetic-based estimator for entanglement in a half-parity measurement setup

Lucas Hackl and Robert H. Jonsson,

Quantum 3, 165 (2019).

We compute the minimal energy cost for extracting entanglement from the ground state of a bosonic or fermionic quadratic system. Specifically, we find the minimal energy increase in the syst…

Theodoros Kapourniotis and Animesh Datta,

Quantum 3, 164 (2019).

Quantum samplers are believed capable of sampling efficiently from distributions that are classically hard to sample from. We consider a sampler inspired by the classical Ising model. It is…

Guang Hao Low and Isaac L. Chuang,

Quantum 3, 163 (2019).

We present the problem of approximating the time-evolution operator $e^{-i\hat{H}t}$ to error $\epsilon$, where the Hamiltonian $\hat{H}=(\langle G|\otimes\hat{\mathcal{I}})\hat{U}(|G\rangle\otimes\hat{\mathcal{I}})$…

Ryan L. Mann and Michael J. Bremner,

Quantum 3, 162 (2019).

We study the problem of approximating the Ising model partition function with complex parameters on bounded degree graphs. We establish a deterministic polynomial-time approximation scheme f…

Patrick P. Potts, Jonatan Bohr Brask, and Nicolas Brunner,

Quantum 3, 161 (2019).

While the ability to measure low temperatures accurately in quantum systems is important in a wide range of experiments, the possibilities and the fundamental limits of quantum thermometry a…

Alexander R. H. Smith and Mehdi Ahmadi,

Quantum 3, 160 (2019).

This article generalizes the conditional probability interpretation of time in which time evolution is realized through entanglement between a clock and a system of interest. This formalism…

Teiko Heinosaari, Leevi Leppäjärvi, and Martin Plávala,

Quantum 3, 157 (2019).

In quantum theory, the no-information-without-disturbance and no-free-information theorems express that those observables that do not disturb the measurement of another observable and those…

Oscar Higgott, Daochen Wang, and Stephen Brierley,

Quantum 3, 156 (2019).

The calculation of excited state energies of electronic structure Hamiltonians has many important applications, such as the calculation of optical spectra and reaction rates. While low-depth…

Wolfgang Niedenzu, Igor Mazets, Gershon Kurizki, and Fred Jendrzejewski,

Quantum 3, 155 (2019).

We propose to implement a quantized thermal machine based on a mixture of two atomic species. One atomic species implements the working medium and the other implements two (cold and hot) bat…