Distributed entangled state production by using quantum repeater protocol

• URL: http://arxiv.org/abs/2105.13784v1
• Date: Fri, 28 May 2021 12:41:53 GMT
• Title: Distributed entangled state production by using quantum repeater protocol
• Authors: M Ghasemi, M K Tavassoly
• Abstract summary: We create entanglement between two far three-level V-type atoms using a quantum repeater protocol. It is observed that the time period of entropy is increased by increasing the mechanical frequency and by decreasing optomechanical coupling strength to the field modes.
• Score: 0.0
• License: http://creativecommons.org/licenses/by-sa/4.0/
• Abstract: We consider entangled state production utilizing a full optomechanical arrangement, based on which we create entanglement between two far three-level V-type atoms using a quantum repeater protocol. At first, we consider eight identical atoms (1; 2;...; 8), while adjacent pairs (i; i + 1) with i = 1; 3; 5; 7 have been prepared in entangled states and the atoms 1, 8 are the two target atoms. The three-level atoms (1,2,3,4) and (5,6,7,8) distinctly become entangled with the system including optical and mechanical modes by performing the interaction in optomechanical cavities between atoms (2,3) and (6,7), respectively. Then, by operating appropriate measurements, instead of Bell state measurement which is a hard task in practical works, the entangled states of atoms (1,4) and (5,8) are achieved. Next, via interacting atoms (4,5) of the pairs (1,4) and (5,8) and operating proper measurement, the entangled state of target atoms (1,8) is obtained. In the continuation, entropy and success probability of the produced entangled state are then evaluated. It is observed that the time period of entropy is increased by increasing the mechanical frequency and by decreasing optomechanical coupling strength to the field modes. Also, in most cases, the maximum of success probability is increased by decreasing G and via decreasing.

Related papers

• Coherent Control of Spontaneous Emission for a giant driven $Λ $-type three-level atom [1.9976998521795732]
  Quantum optics with giant atoms provides a new approach for implementing optical memory devices at the atomic scale. We study the relaxation dynamics of a single driven three-level atom interacting with a one-dimensional waveguide.
  arXiv  Detail & Related papers  (2024-05-30T11:03:08Z)
• Observation of a finite-energy phase transition in a one-dimensional quantum simulator [39.899531336700136]
  We show the first experimental demonstration of a finite-energy phase transition in 1D. By preparing initial states with different energies in a 1D trapped-ion quantum simulator, we study the finite-energy phase diagram of a long-range interacting quantum system.
  arXiv  Detail & Related papers  (2023-10-30T18:00:01Z)
• Schr\"odinger cat states of a 16-microgram mechanical oscillator [54.35850218188371]
  The superposition principle is one of the most fundamental principles of quantum mechanics. Here we demonstrate the preparation of a mechanical resonator with an effective mass of 16.2 micrograms in Schr"odinger cat states of motion. We show control over the size and phase of the superposition and investigate the decoherence dynamics of these states.
  arXiv  Detail & Related papers  (2022-11-01T13:29:44Z)
• Coherent dynamics in a five-level atomic system [62.997667081978825]
  coherent control of multi-partite quantum systems is one of the central prerequisites in quantum information processing. Laser-cooled neon atoms in the metastable state of state $1s2 2s2 2p5 3s$ are prepared. Coherence properties of the prepared states are studied using Ramsey and spin echo measurements.
  arXiv  Detail & Related papers  (2022-10-21T11:44:15Z)
• Formation of robust bound states of interacting microwave photons [148.37607455646454]
  One of the hallmarks of interacting systems is the formation of multi-particle bound states. We develop a high fidelity parameterizable fSim gate that implements the periodic quantum circuit of the spin-1/2 XXZ model. By placing microwave photons in adjacent qubit sites, we study the propagation of these excitations and observe their bound nature for up to 5 photons.
  arXiv  Detail & Related papers  (2022-06-10T17:52:29Z)
• Precision tomography of a three-qubit donor quantum processor in silicon [38.42250061908039]
  Nuclear spins were among the first physical platforms to be considered for quantum information processing. We demonstrate universal quantum logic operations using a pair of ion-implanted 31P donor nuclei in a silicon nanoelectronic device.
  arXiv  Detail & Related papers  (2021-06-06T10:30:38Z)
• Quantum repeater protocol in mixed single- and two-mode Tavis-Cummings models [0.0]
  We study the production of entanglement between two atoms far from each other. Our purpose is to produce entanglement between the atomic pair (1, 8) The effects of detuning, initial interaction time and coupling coeficient on the produced entanglement are investigated.
  arXiv  Detail & Related papers  (2021-05-28T12:33:33Z)
• Quantum repeater protocol using an arrangement of QED-optomechanical hybrid systems [0.0]
  We consider the quantum repeater protocol for distributing the entanglement to two distant three-level atoms. It is shown that, the time period of produced entanglement can be developed by increasing the mechanical frequency.
  arXiv  Detail & Related papers  (2021-05-28T12:01:28Z)
• Quantum repeater using three-level atomic states in the presence of dissipation: stability of entanglement [0.0]
  We investigate the possibility of transferring entanglement to two three-level separable atomic states over large distance using the quantum repeater protocol. Our model consists of eight three-level atoms where only the pairs (1,2, (3,4), (5,6) and (7,8) are prepared in maximally entangled states.
  arXiv  Detail & Related papers  (2021-05-22T18:37:49Z)
• Dissipative quantum repeater [0.0]
  The aim of this paper is the production of entanglement between two two-level atoms locating far from each other. We consider eight such atoms (1, 2,..., 8) sequentially located in a line which begins (ends) with atom 1 (8). The successfulness of our protocol is shown via the evaluation of concurrence as the well-established measure of entanglement between the two (far apart) qubits (1; 8)
  arXiv  Detail & Related papers  (2021-05-22T18:29:46Z)
• Collective spontaneous emission of two entangled atoms near an oscillating mirror [50.591267188664666]
  We consider the cooperative spontaneous emission of a system of two identical atoms, interacting with the electromagnetic field in the vacuum state. Using time-dependent theory, we investigate the spectrum of the radiation emitted by the two-atom system. We show that it is modulated in time, and that the presence of the oscillating mirror can enhance or inhibit the decay rate.
  arXiv  Detail & Related papers  (2020-10-07T06:48:20Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.