New Technology Enables a Chip Scale Atomic Clock
Atomic clocks have enabled a world where ultra-precise timekeeping is now mandatory for communications, navigation, signal processing and many other applications critical to a modern functioning society. However, as smaller, lighter and more energy efficient—in other words, more portable—versions of these systems have emerged, atomic clocks themselves have not followed the same trend lines. Why not? Two reasons: First, legacy atomic clock technologies only scale so small. Second, even if you could make today’s smallest atomic clocks significantly smaller than they are already (about the size of a deck of cards), they would still have serious shortcomings in portable applications—where battery power and ambient temperatures are real issues.
Enter the chip scale atomic clock (CSAC)...
September 24, 2012