Generation of maximally-polarization-entangled photons on a chip

Sergei V. Zhukovsky, Lukas G. Helt, Dongpeng Kang, Payam Abolghasem, Amr S. Helmy, J. E. Sipe

Research output: Contribution to journalJournal articleResearchpeer-review


We propose a method of generating maximally-polarization-entangled states by type-II spontaneous parametric down-conversion in Bragg reflection waveguides. Analytic expressions for the group velocities of down-converted modes are used to engineer zero group-velocity mismatch at the operating point, making the spectra of photons within a down-converted pair indistinguishable and thus leading to a maximally-polarization-entangled state. The results can be used for the creation and manipulation of polarization-entangled qubits entirely on a chip.
Original languageEnglish
JournalPhysical Review A
Issue number1
Pages (from-to)013838
Number of pages6
Publication statusPublished - 2012
Externally publishedYes


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