[PDF] Top 20 Quantum retrodiction in open systems

... The usual formulation of quantum mechanics is pre- dictive. It is well suited for calculating probabilities for particular outcomes of measurements from given prepa- ration information. The preparation information ... See full document

... In classical, deterministic analysis, the integral can be defined as the sum of intervals, and in the limit of infinitesimal intervals, it does not matter whether we have chosen at each interval to use the function value ... See full document

... the quantum coherence in an open system consisting of two coupled bosonic modes embedded in a thermal ...of open systems based on completely positive quantum dynamical ...the ... See full document

... Non-Markovian stochastic Schr¨ odinger equations (NMSSE) are important tools in quantum mechanics, from the theory of open systems to foundations. Yet, in general, they are but formal objects: their ... See full document

... by quantum state retrodiction 6–9 to produce a probability distribution for the original light intensity, given the measured number of photocounts at each ... See full document

... While these two scenarios of openness are in many ways quite distinct, they have some important features in common—in particular, in both scenarios we are led to restrict our attention to a subsystem, while the processes ... See full document

... atoms, which makes the transition |gi → |ri resonant provided a neighbor is already in state |ri (Fig. 1(a)). This situation has already been explored in a two-level setup [12, 13, 16, 45], and very recently also in the ... See full document

... of quantum systems undergo an order-disorder phase ...design quantum mechanical enhancement for solar cell ...true quantum optical ...the quantum ensemble rapidly becomes disordered and ... See full document

... FIG. 2. (a) Top: Scaled cumulant generating function (SCGF) of the original three-qubit system and its first two derivatives for V = 10. The first-order derivative displays an abrupt crossover from an inactive phase to ... See full document

... in open or closed systems, leads to an unusual interpretation of measurements in a quantum ...the quantum system, and we may regard any amount of the evolution as still forming part of the ... See full document

... The theory of open quantum systems requires us to consider not only pure states of G, but also states given by density operators. (A density operator ρ is a Hermitian positively semidefinite operator ... See full document

... would open the way to bottom-up manufacturing, and/or that have the potential to integrate with silicon, or offer clear advantages in the post- CMOS ...circuits-level systems based on a limited number of ... See full document

... of quantum mechanics brought more uncertainty in informa- tion system which is different from traditional classic ...n-Level Quantum System, and [7] implied a certifying single-system steering for ... See full document

... a quantum causal model or quantum stochastic process as far as it is needed for the fol- ...a quantum causal model is proven in ...operational quantum stochastic thermodynamics (apart from one ... See full document

... The retrodictive formalism for open systems allows us to calculate, from the outcome of a measurement, the probability associated with an earlier preparation event. In the preceding section we have ... See full document

... Also, retrodiction from measured atomic states, for a two-level atom interacting with an environment which consists of a multimode electromagnetic field, has been studied ... See full document

... related, systems. Specifically, the systems of [3] were re-solved using PHCpack and it was noted that fairly tight bounds were being obtained from the m-homogenous B´ ezout ...2 systems was clear: a ... See full document

... interesting open systems, in particular, in most condensed matter systems, the Markovian approximation for the influence of the environment is not justified or there are interactions beyond nearest ... See full document

... many-body systems to the temperatures required to realise important many-body physics [80], it has become important to understand decoherence in a many-body context in order to characterise the related heating ... See full document

... We derive the master equation that governs the evolution of the measured state backwards in time in an open system. This allows us to determine probabilities for a given set of preparation events from the results ... See full document