Quantum 5, 572 (2021). https://doi.org/10.22331/q-2021-11-08-572 Variational quantum algorithms (VQA) are considered as some of the most promising methods to determine the properties of complex strongly correlated quantum many-body systems, especially from the perspective of devices […]
Quantum 5, 571 (2021). https://doi.org/10.22331/q-2021-11-08-571 The problem of objectivity, i.e. how to explain on quantum grounds the objective character of the macroscopic world, is one of the aspects of the celebrated quantum-to-classical transition. Initiated by […]
Quantum 5, 570 (2021). https://doi.org/10.22331/q-2021-11-02-570 Inspired by recent developments in the control and manipulation of quantum dot nuclear spins, which allow for the transfer of an electron spin state to the surrounding nuclear-spin ensemble for […]
Quantum 5, 569 (2021). https://doi.org/10.22331/q-2021-10-27-569 Sharing correlated random variables is a resource for a number of information theoretic tasks such as privacy amplification, simultaneous message passing, secret sharing and many more. In this article, we […]
Quantum 5, 568 (2021). https://doi.org/10.22331/q-2021-10-27-568 The fermionic quantum emulator (FQE) is a collection of protocols for emulating quantum dynamics of fermions efficiently taking advantage of common symmetries present in chemical, materials, and condensed-matter systems. The […]
Quantum 5, 567 (2021). https://doi.org/10.22331/q-2021-10-20-567 The Quantum Fisher Information matrix (QFIM) is a central metric in promising algorithms, such as Quantum Natural Gradient Descent and Variational Quantum Imaginary Time Evolution. Computing the full QFIM for […]
Quantum 5, 566 (2021). https://doi.org/10.22331/q-2021-10-19-566 We consider performing phase estimation under the following conditions: we are given only one copy of the input state, the input state does not have to be an eigenstate of […]
Quantum 5, 565 (2021). https://doi.org/10.22331/q-2021-10-19-565 Photonic cluster states are a powerful resource for measurement-based quantum computing and loss-tolerant quantum communication. Proposals to generate multi-dimensional lattice cluster states have identified coupled spin-photon interfaces, spin-ancilla systems, and […]
Quantum 5, 564 (2021). https://doi.org/10.22331/q-2021-10-19-564 We present a quantum error correcting code with $textit{dynamically generated logical qubits}$. When viewed as a subsystem code, the code has no logical qubits. Nevertheless, our measurement patterns generate logical […]
Quantum 5, 563 (2021). https://doi.org/10.22331/q-2021-10-19-563 We study the quantum-classical correspondence of an experimentally accessible system of interacting bosons in a tilted triple-well potential. With the semiclassical analysis, we get a better understanding of the different […]
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