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\title[Remote clock synchronization with entangled photon pairs]{Remote clock synchronization\\with entangled photon pairs}
% \subtitle{}

\author[Jianwei Lee] % (optional, use only with lots of authors)
{\underline{Jianwei Lee}, Lijiong Shen, Alessandro Cer{\`e}, James Troupe, Antia Lamas-Linares, Christian Kurtsiefer}

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		 Quantum Optics Group	
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% \date{} 
\date{\small
  \begin{center} 
  SPIE 2019\\
  Thurs, 15 Aug \\
  11:10am $-$ 11:30am
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% \date[]{04/03/2015} % (optional, should be abbreviation of conference name)
%{Centre for Quantum Technology - UKZN}
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\begin{document}

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  \note{
  Good morning, 
  I'm Jianwei, from the Centre for Quantum Technologies, Singapore.\\
  My collborators include 
  James Troupe, from Applied Research Laboratories, The University of Texas
  and Antia, formerly from Texas Advanced Computing Center and is now in SpQtral, a spaced-based QKD company.\\

  My talk is about synchronizing clocks with entangled photons.

  Basically, we try to import techniques used in quantum communication for a synchronization task.

  We use photon pairs created very closely in time,
  distribute themn,
  and use the coincidence signature for sync.

  The protocol is suitable for use cases where the distance between the clocks is unknown or changing,

	If one of the photons is counterfeited, this results in a drop in observed entanglement. This a mechanism to verify signals.

  However, it is not yet foolproof,
  and we explore its security vulnerability at the end of the talk.

  % while the use of quantum entanglement allows users to directly verify that the signal has not been counterfeited; a process that reduces entanglement.

  % While this solves a long-standing problem, the protocol is still not entirely foolproof; we present a hacking attempt that has proven to evade detection with our current scheme.

  % Briefly, my talk is about how we use pairs of photons,
  % generated very closely in time,
  % and distrbute them
  % to synchronize remote clocks.

  % When the photon pairs are entangled with each other,
  % counterfeiting attempts on the photons can be detected by observing a degradation in entanglement;
  % we have a mechanism to verify the origin of the signl,
  % a technique inherited from quantum key distribution.
   % for secure synchronization.

  % Our method does not rely on characterizing distance between clocks and is suitable for mobile parties.

  % Some of the remaining vulnerabilities will be discussed.




  }
\end{frame}
\include{clock_intro}
\include{clock_quantum}
\include{clock_asymm}
\include{clock_conclusion} 
\end{document}
%EOF