Spectroscopic detection of single Pr3+ ions on the 3H4−1D2 transition
New Journal of Physics, 2015 Rare earth ions in crystals exhibit narrow spectral features and hyperfine-split ground states with exceptionally long coherence times. These features make them ideal platforms for quantum information processing in the solid state.
Emanuel Eichhammer +3 more
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Near-Optimal Variance-Based Uncertainty Relations
Frontiers in Physics, 2022 Learning physical properties of a quantum system is essential for the developments of quantum technologies. However, Heisenberg’s uncertainty principle constrains the potential knowledge one can simultaneously have about a system in quantum theory. Aside
Yunlong Xiao +7 more
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Three-party pure quantum states are determined by two two-party reduced states
, 2004 We can uniquely calculate almost all entangled state vectors of tripartite systems ABC if we know the reduced states of any two bipartite subsystems, e.g., of AB and of BC.
Lajos Diósi, M.A. Nielsen
core +1 more source
Multi-qubit gate with trapped ions for microwave and laser-based implementation
New Journal of Physics, 2015 A proposal for a phase gate and a Mølmer–Sørensen gate in the dressed state basis is presented. In order to perform the multi-qubit interaction, a strong magnetic field gradient is required to couple the phonon-bus to the qubit states.
I Cohen +3 more
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Diverging scaling with converging multisite entanglement in odd and even quantum Heisenberg ladders
New Journal of Physics, 2016 We investigate finite-size scaling of genuine multisite entanglement in the ground state of quantum spin-1/2 Heisenberg ladders. We obtain the ground states of odd- and even-legged Heisenberg ladder Hamiltonians and compute genuine multisite entanglement,
Sudipto Singha Roy +4 more
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Dynamical decoupling sequences for multi-qubit dephasing suppression and long-time quantum memory
New Journal of Physics, 2016 We consider a class of multi-qubit dephasing models that combine classical noise sources and linear coupling to a bosonic environment, and are controlled by arbitrary sequences of dynamical decoupling pulses.
Gerardo A Paz-Silva +3 more
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Insomnia and sleep quality among older people residing in old age homes at Andhra Pradesh, India
International Journal of Africa Nursing Sciences, 2023 Background: Sleep problems are very common among elderly population. Moreover, people living in old age homes being deprived of the love of their families do not report impaired sleep patterns due to lack of knowledge or due to under recognition and ...
Devanprabudoss Jesudoss +2 more
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Probabilistically cloning two single-photon states using weak cross-Kerr nonlinearities
New Journal of Physics, 2014 By using quantum nondemolition detectors (QNDs) based on weak cross-Kerr nonlinearities, we propose an experimental scheme for achieving $1\to 2$ probabilistic quantum cloning (PQC) of a single-photon state, secretly choosing from a two-state set. In our
Wen Zhang +3 more
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Weak cloning of an unknown quantum state
, 2006 The impossibility to clone an unknown quantum state is a powerful principle to understand the nature of quantum mechanics, especially within the context of quantum computing and quantum information.
Aharonov +12 more
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Quantum parameter estimation using multi-mode Gaussian states
New Journal of Physics, 2015 Gaussian states are of increasing interest in the estimation of physical parameters because they are easy to prepare and manipulate in experiments. In this article, we derive formulae for the optimal estimation of parameters using two- and multi-mode ...
Dominik Šafránek +2 more
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