2016
DOI: 10.1103/physrevb.94.165302
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Steady-state entanglement between distant quantum dots in photonic crystal dimers

Abstract: We show that two spatially separated semiconductor quantum dots under resonant and continuous-wave excitation can be strongly entangled in the steady-state, thanks to their radiative coupling by mutual interaction through the normal modes of a photonic crystal dimer. We employ a quantum master equation formalism to quantify the steady-state entanglement by calculating the system negativity. Calculations are specified to consider realistic semiconductor nanostructure parameters for the photonic crystal dimer-qu… Show more

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Cited by 16 publications
(10 citation statements)
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References 53 publications
(70 reference statements)
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“…Using PMs to obtain an efficient coupling between the QDs presents an integrable and compact semiconductor solution. In addition, these PMs have also been theoretically investigated for entanglement of a pair of QDs [12,13], they enable the unconventional photon blockade [14,15], and serve as a starting point for the realization of driven-dissipative multi-cavity systems [16] and strong photon-photon correlations [17][18][19].An attractive type of cavity systems are whispering gallery mode (WGM) supporting microdisks (see exemplary SEM-picture in Fig. 1 a)).…”
mentioning
confidence: 99%
“…Using PMs to obtain an efficient coupling between the QDs presents an integrable and compact semiconductor solution. In addition, these PMs have also been theoretically investigated for entanglement of a pair of QDs [12,13], they enable the unconventional photon blockade [14,15], and serve as a starting point for the realization of driven-dissipative multi-cavity systems [16] and strong photon-photon correlations [17][18][19].An attractive type of cavity systems are whispering gallery mode (WGM) supporting microdisks (see exemplary SEM-picture in Fig. 1 a)).…”
mentioning
confidence: 99%
“…δJ/ J ≪ 1. The present results are of particular relevance for the design of state-of-the-art integrated PhC devices and for the rapidly growing research on quantum many-body phenomena in photonic arrays [35,36,37,38,39,40].…”
Section: Introductionmentioning
confidence: 80%
“…J J 1 d á ñ  . The present results are of particular relevance for the design of state-of-the-art integrated PhC devices and for the rapidly growing research on quantum many-body phenomena in photonic arrays [35][36][37][38][39][40].The paper is organized as follows. In section 2 we discuss the resonant modes of the ideal (i.e.…”
mentioning
confidence: 99%
“…More generally, optical pumping schemes are used to selectively prepare and maintain the working medium in a given non-trivial target steady state that is different from its thermal equilibrium state. In this spirit, the potential of achieving steady state entanglement of pairs of qubits through quantum optical bath engineering has started to be explored [3][4][5][6][7][8][9][10][11][12][13][14][15][16] , most of the attention being focused on thermal baths as purely incoherent sources of non classical correlations [17][18][19][20][21][22] ; however, for the latter protocols the amount of entanglement that can be generated without any additional feedback or filtering operation is typically rather modest 21,22 . By using reservoirs acting on collective degrees of freedom of the qubits, the upper theoretical limit for the concurrence can be increased to C = 1/3, which is asymptotically reached only under unrealistically large temperature gradients between the two reservoirs 17,19 .…”
mentioning
confidence: 99%