Lev Vaidman (Hebrew: לב ויידמן; born 4 September 1955) is a Russian-Israeli physicist and Professor at Tel Aviv University, Israel.

[1] In 2010, the Elitzur–Vaidman bomb tester was chosen as one of the "Seven Wonders of the Quantum World" by New Scientist Magazine.

[2] He attended 45th Physics-Mathematics School in Saint Petersburg and was twice among the winners of the All-Soviet high school students Physics Olympiad (first place in 1971[3][4] and second place in 1972[5][6]), and in 1972 scored 26th in the International Physics Olympiad in Bucharest.

The upper-path photon is reflected back ninety degrees so that it is returned to its original trajectory.

Vaidman has argued that this lends support to the many-worlds interpretation of quantum mechanics.

He has demonstrated that non-local measurements can be used to teleport unknown quantum states of systems with continuous variables.