Quantum 7, 1143 (2023). https://doi.org/10.22331/q-2023-10-16-1143 We define the quantum Wasserstein distance such that the optimization of the coupling is carried out over bipartite separable states rather than bipartite quantum states in general, and examine its […]
Quantum 7, 1142 (2023). https://doi.org/10.22331/q-2023-10-16-1142 When gravity is sourced by a quantum system, there is tension between its role as the mediator of a fundamental interaction, which is expected to acquire nonclassical features, and its […]
Quantum 7, 1141 (2023). https://doi.org/10.22331/q-2023-10-16-1141 Gate-based universal quantum computation is formulated in terms of two types of operations: local single-qubit gates, which are typically easily implementable, and two-qubit entangling gates, whose faithful implementation remains one […]
Quantum 7, 1140 (2023). https://doi.org/10.22331/q-2023-10-16-1140 Simulating the real-time dynamics of lattice gauge theories, underlying the Standard Model of particle physics, is a notoriously difficult problem where quantum simulators can provide a practical advantage over classical […]
Quantum 7, 1139 (2023). https://doi.org/10.22331/q-2023-10-12-1139 The simulation of quantum dynamics calls for quantum algorithms working in first quantized grid encodings. Here, we propose a variational quantum algorithm for performing quantum dynamics in first quantization. In […]
Quantum 7, 1138 (2023). https://doi.org/10.22331/q-2023-10-12-1138 The holographic principle and its realization in the AdS/CFT correspondence led to unexpected connections between general relativity and quantum information. This set the stage for studying aspects of quantum gravity […]
Quantum 7, 1137 (2023). https://doi.org/10.22331/q-2023-10-12-1137 We construct Pauli topological subsystem codes characterized by arbitrary two-dimensional Abelian anyon theories–this includes anyon theories with degenerate braiding relations and those without a gapped boundary to the vacuum. Our […]
Quantum 7, 1136 (2023). https://doi.org/10.22331/q-2023-10-11-1136 We introduce a multi-modal, multi-level quantum complex exponential least squares (MM-QCELS) method to simultaneously estimate multiple eigenvalues of a quantum Hamiltonian on early fault-tolerant quantum computers. Our theoretical analysis demonstrates […]
Quantum 7, 1135 (2023). https://doi.org/10.22331/q-2023-10-11-1135 One of the most puzzling consequences of interpreting quantum mechanics in terms of concepts borrowed from classical physics, is the so-called wave-particle duality. Usually, wave-particle duality is illustrated in terms […]
Quantum 7, 1134 (2023). https://doi.org/10.22331/q-2023-10-10-1134 When two parties, Alice and Bob, share correlated quantum systems and Alice performs local measurements, Alice’s updated description of Bob’s state can provide evidence of nonclassical correlations. This simple scenario, […]
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