Tommaso Toffoli’s 3-input 3-output logic gate, central to the theory of reversible and quantum computing, recently featured on a custom cake made for his 70’th birthday.
Nowadays scientists’ birthday celebrations often take the form of informal mini-conferences, festschrifts without the schrift. I have had the honor of attending several this year, including ones for John Preskill’s and Wojciech Zurek’s 60’th birthdays and a joint 80’th birthday conference for Myriam Sarachik and Daniel Greenberger, both physics professors at City College of New York. At that party I learned that Greenberger and Sarachick have known each other since high school. Neither has any immediate plans for retirement.
The Quantum Cardinals