Quantum 9, 1751 (2025). https://doi.org/10.22331/q-2025-05-20-1751 The goal in quantum state transfer is to avoid the need to physically transport carriers of quantum information. This is achieved by using a suitably engineered Hamiltonian that induces the […]
Quantum 9, 1750 (2025). https://doi.org/10.22331/q-2025-05-20-1750 Identification of possible transformations of quantum objects including quantum states and quantum operations is indispensable in developing quantum algorithms. Universal transformations, defined as input-independent transformations, appear in various quantum applications. […]
Quantum 9, 1749 (2025). https://doi.org/10.22331/q-2025-05-20-1749 Masanes, Galley and Müller [39] argue that the measurement postulates of non-relativistic quantum mechanics follow from the structural postulates together with an assumption they call the “possibility of state estimation”. […]
Quantum 9, 1748 (2025). https://doi.org/10.22331/q-2025-05-20-1748 Simulating the Hubbard model is of great interest to a wide range of applications within condensed matter physics, however its solution on classical computers remains challenging in dimensions larger than […]
Quantum 9, 1747 (2025). https://doi.org/10.22331/q-2025-05-15-1747 Block Encoding (BE) is a crucial subroutine in many modern quantum algorithms, including those with near-optimal scaling for simulating quantum many-body systems, which often rely on Quantum Signal Processing (QSP). […]
Quantum 9, 1746 (2025). https://doi.org/10.22331/q-2025-05-15-1746 Spontaneous symmetry breaking in systems with symmetry is a cornerstone phenomenon accompanying second-order phase transitions. Here, we predict the opposite phenomenon, namely, spontaneous symmetry emergence in a system that lacks […]
Quantum 9, 1745 (2025). https://doi.org/10.22331/q-2025-05-15-1745 Quantum machine learning (QML) has become a promising area for real world applications of quantum computers, but near-term methods and their scalability are still important research topics. In this context, […]
Quantum 9, 1744 (2025). https://doi.org/10.22331/q-2025-05-15-1744 Losses are one of the main bottlenecks for the distribution of entanglement in quantum networks, which can be overcome by the implementation of quantum repeaters. The most basic form of […]
Quantum 9, 1743 (2025). https://doi.org/10.22331/q-2025-05-15-1743 Quantum detailed balance is formulated in terms of elementary transitions, in close analogy to detailed balance in a classical Markov chain on a finite set of points. An elementary transition […]
Quantum 9, 1742 (2025). https://doi.org/10.22331/q-2025-05-13-1742 Time evolution in several classes of quantum devices is generated through the application of quantum gates. Resetting is a critical technological feature in these systems allowing for mid-circuit measurement and […]
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