Chan et al. reply

Chan, Moses H. W.; Blum, Kenneth I.; Murphy, S. Q.; Wong, Gane Ka‐Shu; Reppy, J. D.

doi:10.1103/physrevlett.64.979

Cited by 159 publications

(264 citation statements)

References 7 publications

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“…Different to some previous works [4,6], the superhigh entanglement produced with this scheme is due to the atomic spontaneously generated coherence (SGC) [10,11]. With parallel dipoles (ǫ = 1), the photon emitted along the two transition pathes |1 → |c and |2 → |c will interfere and modify the momentum entanglement with the recoiled atom as a result.…”

Section: (B)mentioning

confidence: 99%

“…As in the preceding section, to study the generation of momentum entanglement [3,4,5,6], it is usually convenient to assume the entangled system to be a close pure state system. However, in a realistic environment with T ≫ 0K, the interaction with environment will make the entangled system into a mixed state, and, as a result, cause the disentanglement.…”

Section: Disentanglementmentioning

confidence: 99%

“…As a physical realization, momentum entanglement has been extensively studied both theoretically [3,4,5,6,7] and experimentally [8]. With momentum entanglement between atom and photon, it is possible to define the best localized single-photon wavepacket even in free space [3], and realize the highest degree of continuous entanglement [4] up to date.…”

Section: Introductionmentioning

confidence: 99%

“…1(a), we find that, the recoil-inducedentanglement will be affected by the interference between different transitions from the atomic upper levels, and can be effectively controlled by an auxiliary coupling field if the dipoles for the transitions are parallel. This scheme, compared with the Raman scattering [4] and resonant scattering [6], could be more efficient in producing superhigh degree of entanglement, since the controlling light is classical and need not be far detuned.…”

Section: Introductionmentioning

confidence: 99%

“…As known, photon emitted from atom will recoil and be entangled with the atom [4,5,6] due to momentum conservation. In order to coherently manipulate the entanglement, in this paper, we propose a novel scheme to control the entanglement through the atomic spontaneously generated coherence (SGC).…”

Section: Introductionmentioning

confidence: 99%

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Momentum entanglement and disentanglement between an atom and a photon

Guo

2007

Phys. Rev. A

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With the quantum interference between two transition pathways, we demonstrate a novel scheme to coherently control the momentum entanglement between a single atom and a single photon. The unavoidable disentanglement is also studied from the first principle, which indicates that the stably entangled atom-photon system with superhigh degree of entanglement may be realized with this scheme under certain conditions.

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Section: (B)mentioning

confidence: 99%

Section: Disentanglementmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Momentum entanglement and disentanglement between an atom and a photon

Guo

2007

Phys. Rev. A

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Magneto-Donors and Donor-Bound Excitons in GaAs/Ga0.67Al0.33As Heterostructures in the Quantum Hall Regime

Couzinet

Raymond

Elmezouar

et al. 1998

phys. stat. sol. (b)

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Interband photoluminescence (PL) is studied as a function of magnetic field in modulation-doped GaAs/Ga 0.67 Al 0.33 As heterostructures in the Quantum Hall regime. The oscillatory PL data exhibit free electron and donor (ground electric subband) to free hole transitions, as well as free and bound exciton (first excited subband) transitions. Pronounced intensity oscillations of all transitions are observed as the magnetic field varies between 0 and 12 T. In particular, we observe, for the first time, strong intensity oscillations of donor±hole and bound exciton transitions with exactly opposite phase from which we conclude that the observed bound excitons are bound to the donors at the GaAs/ Ga 0.67 Al 0.33 As interface. Similarly, the intensities of free electron±hole and free exciton transitions oscillate with exactly opposite phase. Various mechanisms of the intensity oscillations are discussed, taking into account the available parallel behaviour of the free and bound carrier excitations. We exclude an oscillatory screening by 2DEG to be the cause of the intensity oscillations. We conclude that the intensity transfer between the electron±hole and the free exciton transitions occurs when, as a function of magnetic field, the interband electron±hole energy becomes larger than the corresponding exciton energy, so that it is advantageous for the pair to form an excitonic state. A similar mechanism is responsible for the intensity transfer between the donor±hole and the bound exciton transitions.Magneto-donors (MD) in quantum wells were investigated by various authors with the use of optical methods [1]. Transport studies on heavily doped heterojunctions demonstrated a field-induced metal±nonmetal transition [2]. Magneto-donors in symmetric wells were described theoretically by Green and coworkers

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Search for the Ultimate Energy Source

Dean

2013

Green Energy and Technology

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Chan et al. reply

Cited by 159 publications

References 7 publications

Momentum entanglement and disentanglement between an atom and a photon

Momentum entanglement and disentanglement between an atom and a photon

Magneto-Donors and Donor-Bound Excitons in GaAs/Ga0.67Al0.33As Heterostructures in the Quantum Hall Regime

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