Swati Bhugra

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Education / Work History

• M.Tech, Center for Lasers and Photonics (CELP), IIT Kanpur (2011-2013)
  • Advisors: Prof. Debabrata Goswami and Prof. Pardeep K. Kumar

Thesis Abstract

Higher-Order Phase Modulation Formats for BB84 QKD Systems

In my thesis we extend the phase-coded implementation of BB84 protocol from the present QPSK modulation format, to 8-PSK thereby increasing the keyrate to 2 bits/qubit. The transmitter and receivers for implementing 8-PSK BB84 QKD protocol is proposed that uses optical I/Q modulators for phase modulation and homodyne detection for bit-decoding. The security of the proposed scheme has been investigated and the worst case QBER has been theoretically calculated to be 0.15625 when the eavesdropper uses the Intercept-Resend attack strategy. This scheme has shown potential for implementation of high key-rate QKD systems with acceptable QBER, when relevant countermeasures are provided.

Research Topic / Interest

Contact me to know my current interests.