Clock

• Molecular clock could greatly improve smartphone navigation (14 Jul 2018)
  
• About time: New record for atomic clock accuracy (23 Apr 2016)
  
• 3,000 atoms entangled with a single photon (19 Apr 2016)
  
• Quantum mechanic frequency filter for atomic clocks (26 Jul 2015)
  
• Entangled clocks could provide accurate world time standard – Physics World (22 Jun 2014)