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Intrinsic upper bound on two-qubit polarization entanglement predetermined by pump polarization correlations in parametric down-conversion
Girish Kulkarni, V. Subrahmanyam, Anand. K. Jha
We study how one-particle correlations transfer to manifest as two-particle correlations in the context of parametric down-conversion (PDC), a process in which a pump photon is ann…
Radio Crickets: Chirping Jets from Black Hole Binaries Entering their Gravitational Wave Inspiral
Girish Kulkarni, Abraham Loeb
We study a novel electromagnetic signature of supermassive black hole binaries whose inspiral starts being dominated by gravitational wave (GW) emission. Recent simulations suggest…
Characterizing the Pressure Smoothing Scale of the Intergalactic Medium
Girish Kulkarni, Joseph F. Hennawi, Jose Oñorbe +2
The thermal state of the intergalactic medium (IGM) at z < 6 constrains the nature and timing of cosmic reionization events, but its inference from the Ly-alpha forest is degenerat…