How to Recover a Qubit That Has Fallen Into a Black Hole

Jul 13, 2015
5 pages
Published in:
  • Phys.Rev.Lett. 115 (2015) 26, 261302
  • Published: Dec 30, 2015
e-Print:
Report number:
  • CALT-TH-2015-035

Citations per year

20152017201920212021120
Abstract: (APS)
We demonstrate an algorithm for the retrieval of a qubit, encoded in spin angular momentum, that has been dropped into a no-firewall black hole. Retrieval is achieved analogously to quantum teleportation by collecting Hawking radiation and performing measurements on the black hole. Importantly, these methods require only the ability to perform measurements from outside the event horizon.
Note:
  • 6 pages v2: modified protocol to discuss total angular momentum, corrected typos, added references v3: updated with referee feedback
  • 04.70.Dy
  • 03.67.-a
  • 03.67.Ac
  • 04.60.-m
  • radiation: Hawking
  • radiation: emission
  • black hole
  • qubit
  • angular momentum
  • teleportation