While cluster correlation expansion (CCE) techniques are useful to simulate the coherence of electron spins in defects, they are computationally expensive to investigate broad classes of stable materials. Our analysis reveals that this speedup is due to both an enlarged solution space of target wave functions and the appearance of additional channels connecting initial and target states. One of the most critical property of qubits is their quantum coherence. We find that leakage outside the computational subspace (something that is usually considered problematic) speeds up the state preparation, further reducing device coherence-time demands. 7198 pp 10031049 In this supplement Editorial Progress Reviews Improvements in techniques to manipulate light and matter are facilitating exciting applications of. We further investigate how the minimal state preparation time is impacted by the number of energy levels active in the transmon simulations. We find that the resulting time-optimal pulses develop a bang-bang form consistent with Pontryagin’s maximum principle. Here, we find the fastest possible pulses that prepare target molecular wave functions for a given device Hamiltonian describing coupled transmon qubits using simulations. Thermodynamic cycles can, in principle, be designed to extract work from this nonequilibrium resource. A variational pulse-shaping algorithm known as ctrl-VQE was recently proposed to address this issue by eliminating the need for parameterized quantum circuits, which lead to long state preparation times. In the quantum setting, finite-time control operations typically generate coherence in the instantaneous energy eigenbasis of the dynamical system. Gaussian ensembles.Quantum simulation on noisy intermediate-scale quantum devices is severely limited by short qubit coherence times. Theory, we analytically characterize the CGP-OTOC connection for the Haar and Recurrences in quantitatively the same way. In fact, quantum coherence is related to the bodys ability to enable photons to work synergistically and collaboratively to organize biological processes. Transverse-field Ising model, we show that the OTOC and CGP capture quantum Via numerical simulations of the (nonintegrable) Protecting quantum coherences in matter from the detrimental effects introduced by its environment is essential to employ molecules and materials in quantum technologies and develop enhanced spectr. Techniques to manipulate light and matter have become increasingly. Out-of-time-ordered correlator (OTOC), a measure of information scrambling in 32 Citations Metrics Quantum physics has come a long way since its theoretical beginnings in the early twentieth century. That the coherence-generating power (CGP) - a measure of how much coherence aĭynamical process generates on average - emerges as a subpart of the The chapters are devoted to studies of a wide range of quantum systems, with an emphasis on understanding of quantum coherence and other quantum phenomena. Matrix theory in the bulk of the spectrum. Then, we numerically study the coherence ofĬhaotic-vs-integrable eigenstates and find excellent agreement with random This connection for all quantum coherence measures by using tools from Quantum coherence measures in disguise (or closely related to them). States, we show how several well-studied quantifiers of chaos are, in fact, Quantum-coherent nanoscience, lying at the intersection between nanoscience and quantum science, is a discipline within the fields of condensed matter physics, materials science and molecular. We quantify this connectionĪt two different levels: quantum states and quantum channels. Download a PDF of the paper titled Quantum coherence as a signature of chaos, by Namit Anand and 3 other authors Download PDF Abstract: We establish a rigorous connection between quantum coherence and quantumĬhaos by employing coherence measures originating from the resource theoryįramework as a diagnostic tool for quantum chaos.
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