Protecting the entanglement of two interacting atoms in a cavity by quantum Zeno dynamics

Quantum Zeno and Anti‐Zeno Effects in the Dynamics of Non‐Degenerate Hyper‐Raman Processes Coupled to Two Linear Waveguides

“…[49] Interesting applications of QZE and QAZE are also found in opposing decoherence by restricting the dynamics of the system in a decoherence-free subspace, [50] quantum interrogation measurement, [38] counterfactual secure quantum communication, [43,51] isolating quantum dot from its surrounding electron reservoir, [52] protecting the entanglement between two interacting atoms. [54] Even more practical problems, like portfolio optimization problem is proposed to be addressed using QZE, [53] and attempts have been made to study QZE in the macroscopic system, like a large black hole [56] and nonlinear waveguides, [57] nonlinear optical couplers. [55] Present study is motivated by the great possibilities of application of the QZE and QAZE established through these works, and the fact that the physical system under consideration is extremely general and experimentally realizable.…”

Inhibiting phase drift in multi-atom clocks using the quantum Zeno effect

“…It has also been shown that the Zeno effect is a sufficient resource for the implementation of quantum logic gates 20,21 , which could be used as the basis of a quantum computer 21 or quantum repeaters 22 . The Zeno effect can also be used to prepare various nonclassical or entangled states [23][24][25][26][27] and to protect entanglement once it has been generated 28,29 . The anti-Zeno effect, by which repeated measurements increase the rate of transitions, may be useful in quantum heat engines 30 .…”

Interplay between quantum Zeno and anti-Zeno effects in a nondegenerate hyper-Raman nonlinear optical coupler

“…Experimental realization of QZE paved the way for various applications of QZE [33,[37][38][39][40], ranging from the enhancement of the resolution of absorption tomography [39,40] to the demonstration of entangling gate between two effectively non-interacting transmon qubits [41], the reduction of communication complexity [42] to the QZE and QAZE based noise spectroscopy [43] to the utilization of QZE to achieve improved precision of metrology in presence of non-Markovian noise [44]. Interesting applications of QZE and QAZE are also found in opposing decoherence by restricting the dynamics of the system in a decoherence-free subspace [45], quantum interrogation measurement [33], counterfactual secure quantum communication [38,46], isolating quantum dot from its surrounding electron reservoir [47], protecting the entanglement between two interacting atoms [49]. Even more practical problems like portfolio optimization problem is proposed to be addressed using QZE [48], and attempts have been made to study QZE in the macroscopic system, like a large black hole [51] and nonlinear waveguides [52], nonlinear optical couplers [50].…”