Quantum 8, 1538 (2024). https://doi.org/10.22331/q-2024-11-26-1538 The unitary coupled cluster (UCC) ansatz is a promising tool for achieving high-precision results using the variational quantum eigensolver (VQE) algorithm in the NISQ era. However, results on quantum hardware […]
Quantum 8, 1537 (2024). https://doi.org/10.22331/q-2024-11-26-1537 We study the problem of learning the Hamiltonian of a many-body quantum system from experimental data. We show that the rate of learning depends on the amount of control available […]
Quantum 8, 1536 (2024). https://doi.org/10.22331/q-2024-11-26-1536 The Quantum Cheshire Cat experiment showed that when weak measurements are performed on pre- and post-selected system, the counterintuitive result has been obtained that a neutron is measured to be […]
Quantum 8, 1535 (2024). https://doi.org/10.22331/q-2024-11-25-1535 We present a novel formalism to both understand and construct mixers that preserve a given subspace. The method connects and utilizes the stabilizer formalism that is used in error correcting […]
Quantum 8, 1534 (2024). https://doi.org/10.22331/q-2024-11-21-1534 We derive a Markovian master equation that models the evolution of systems subject to driving and control fields. Our approach combines time rescaling and weak-coupling limits for the system-environment interaction […]
Quantum 8, 1533 (2024). https://doi.org/10.22331/q-2024-11-21-1533 Quantum information transfer is fundamental for scalable quantum computing in any potential platform and architecture. Hole spin qubits, owing to their intrinsic spin-orbit interaction (SOI), promise fast quantum operations which […]
Quantum 8, 1532 (2024). https://doi.org/10.22331/q-2024-11-20-1532 It has previously been established that adiabatic quantum computation, operating based on a continuous Zeno effect due to dynamical phases between eigenstates, is able to realise an optimal Grover-like quantum […]
Quantum 8, 1531 (2024). https://doi.org/10.22331/q-2024-11-20-1531 The hope of the quantum computing field is that quantum architectures are able to scale up and realize fault-tolerant quantum computing. Due to engineering challenges, such ”cheap” error correction may […]
Quantum 8, 1530 (2024). https://doi.org/10.22331/q-2024-11-20-1530 We explore the power of the unbounded Fan-Out gate and the Global Tunable gates generated by Ising-type Hamiltonians in constructing constant-depth quantum circuits, with particular attention to quantum memory devices. […]
Quantum 8, 1529 (2024). https://doi.org/10.22331/q-2024-11-20-1529 A colloquial interpretation of entropy is that it is the knowledge gained upon learning the outcome of a random experiment. Conditional entropy is then interpreted as the knowledge gained upon […]
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