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Polariton qubits

As light-matter superpositions, polaritons have an intrinsic quantum formulation. This page discusses quantum information processing with—and the nonclassical physics of—polaritons.

Some works take a safe stand and refer to "analogue qubits", which could be useful although essentially classical objects or lacking important quantum features such as entanglement.

Related works

• Branch-entangled polariton pairs in planar microcavities and photonic wires. C. Ciuti in Phys. Rev. B 69:245304 (2004).
• Quantum Complementarity of Microcavity Polaritons. S. Savasta, O. Di Stefano, V. Savona and W. Langbein in Phys. Rev. Lett. 94:246401 (2005).
• Macroscopic quantum computation using Bose-Einstein condensates. T. Byrnes, K. Wen and Y. Yamamoto in Phys. Rev. A 85:040306 (2012).
• Qubits Based on Polariton Rabi Oscillators. S. S. Demirchyan, I. Yu. Chestnov, A. P. Alodjants, M. M. Glazov and A. V. Kavokin in Phys. Rev. Lett. 112:196403 (2014).
• All optical controlled-NOT gate based on an exciton–polariton circuit. D. Solnyshkov, O. Bleu and G. Malpuech in Superlatt. Microstruct. 83:466 (2015).
• Exciton-polariton quantum gates based on continuous variables. O. Kyriienko and T. C. H. Liew in Phys. Rev. B 93:035301 (2016).
• Quantum computing with exciton-polariton condensates. S. Ghosh and T. C. H. Liew in npj Quantum Inf. 6:16 (2020).
• Microcavity Polaritons for Quantum Simulation. T. Boulier, M. J. Jacquet, A. Maître, G. Lerario, F. Claude, S. Pigeon, Q. Glorieux, A. Amo, J. Bloch, A. Bramati and E. Giacobino in Adv. Quantum Technol. 3: (2020).
• Split-ring polariton condensates as macroscopic two-level quantum systems. Y. Xue, I. Chestnov, E. Sedov, E. Kiktenko, A. K. Fedorov, S. Schumacher, X. Ma and A. Kavokin in Phys. Rev. Res. 3:013099 (2021).
• Quantifying Quantum Coherence in Polariton Condensates. C. Lüders, M. Pukrop, E. Rozas, C. Schneider, S. Höfling, J. Sperling, S. Schumacher and M. Aßmann in Phys. Rev. X Quantum 2:030320 (2021).
• Polariton condensates for classical and quantum computing. A. Kavokin, T. C. H. Liew, C. Schneider, P. G. Lagoudakis, S. Klembt and S. Hoefling in Nature Rev. Phys. 4:435 (2022).
• The future of quantum in polariton systems: opinion. T. C. H. Liew in Opt. Mater. Express 13:1938 (2023).
• Qubit gate operations in elliptically trapped polariton condensates. L. S. Ricco, I. A. Shelykh and A. Kavokin in Sci. Rep. 14:4211 (2024).
• Qubit analog with polariton superfluid in an annular trap. J. Barrat, A. F. Tzortzakakis, M. Niu, X. Zhou, G. G. Paschos, D. Petrosyan and P. G. Savvidis in Science Advances 10:eado4042 (2024).