Spin-Photon Entangling Diode

Flindt, Christian; Sørensen, Anders S.; Lukin, Mikhail D.

doi:10.1103/physrevlett.98.240501

Cited by 15 publications

(13 citation statements)

References 32 publications

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“…The essence of this effect lies in the imbalance of the effective Rabi frequencies for any applied magnetic field strength. This is a regime that merits a thorough investigation for the challenges of spin-photon entanglement [46,47].…”

Section: Mollow Quintuplet and The Spin-selective Dynamic Stark Effectmentioning

confidence: 99%

Spin-resolved quantum-dot resonance fluorescence

et al. 2009

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In the quest for physically realizable quantum information science (QIS) primitives, self-assembled quantum dots (QDs) serve a dual role as sources of photonic (flying) qubits and traps for electron spin; the prototypical stationary qubit. Here we demonstrate the first observation of spin-selective, near background-free and transform-limited photon emission from a resonantly driven QD transition. The hallmark of resonance fluorescence, i.e. the Mollow triplet in the scattered photon spectrum when an optical transition is driven resonantly, is presented as a natural way to spectrally isolate the photons of interest from the original driving field. We go on to demonstrate that the relative frequencies of the two spin-tagged photon states are tuned independent of an applied magnetic field via the spin-selective dynamic Stark effect induced by the very same driving laser. This demonstration enables the realization of challenging QIS proposals such as heralded single photon generation for linear optics quantum computing, spin-photon entanglement, and dipolar interaction mediated quantum logic gates. From a spectroscopy perspective, the spin-selective dynamic Stark effect tunes the QD spin-state splitting in the ground and excited states independently, thus enabling previously inaccessible regimes for controlled probing of mesoscopic spin systems

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Section: Mollow Quintuplet and The Spin-selective Dynamic Stark Effectmentioning

confidence: 99%

Spin-resolved quantum-dot resonance fluorescence

et al. 2009

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“…We observe that the minimum of g (2) b (0) is on an ellipse defined by Eq. (22) and shown in Fig. 4(c).…”

Section: One-photon and Two-photon Diodementioning

confidence: 85%

Quantum optical diode with semiconductor microcavities

2014

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The semiconductor diode, which acts as an electrical rectifier and allows unidirectional electronic transports, is the key to information processing in integrated circuits. Analogously, an optical rectifier (or diode) working at specific target wavelengths has recently becomes a dreaming device in optical communication and signal processing. In this paper, we propose a scheme to realize an optical diode for photonic transport at the level of few photons. The system consists of two spatially overlapping single-mode semiconductor microcavities coupled via ${\chi ^{(2)}}$ nonlinearities. The photon blockade is predicted to take place in this system. These photon blockade effects can be achieved by tuning the frequency of the input laser field (driving field). Based on those blockades, we derive analytically the single- and two-photon current in terms of zero and finite-time delayed two-order correlation function. The results suggest that the system can serve as an single- and two-photon quantum optical diodes which allow transmission of photons in one direction much more efficiently than in the other.Comment: 13 pages, 6 figure

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“…Since spin-orbit coupling (SOC) couples electron orbital motion to its spin, there is an ongoing effort to harness SOC as a possible tool for all-electrical spin control and generation of spin-polarized current without ferromagnetic contacts and applied magnetic fields. The Rashba spin-orbit coupling phenomenon [7,115] (RSOC) has been the focus of intense research in recent years [116,117], but despite all that effort, there has been no successful demonstration of unambiguous spin injection or control by RSOC.…”

Section: All-electrical Spintronicsmentioning

confidence: 99%

General Principles of Spin Transistors and Spin Logic Devices

Bandyopadhyay

Cahay

2013

Handbook of Spintronics

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This chapter provides an overview of the field of spin-based devices, circuits, and architectures for digital information processing. Electron spin -as opposed to electron charge -is used as a classical degree of freedom to encode binary bits, and this approach improves the energy efficiency of information processing. However, there are also disadvantages associated with unreliability, difficulty of reading and writing information, and sometimes the need for cryogenic operation. These issues are discussed exhaustively, pointing the readers to niche applications where spin-based devices may offer some advantage. Both the basic and the applied aspects of spintronic information processing are discussed.

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Spin-Photon Entangling Diode

Cited by 15 publications

References 32 publications

Spin-resolved quantum-dot resonance fluorescence

Spin-resolved quantum-dot resonance fluorescence

Quantum optical diode with semiconductor microcavities

General Principles of Spin Transistors and Spin Logic Devices

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