[math-fun] How to Recover a Qubit That Has Fallen Into a Black Hole
FYI -- http://arxiv.org/abs/1507.03592 Aidan Chatwin-Davies, Adam S. Jermyn, Sean M. Carroll We demonstrate an algorithm for the retrieval of a qubit, encoded in spin angular momentum, that has been dropped into a no-firewall unitary black hole. Retrieval is achieved analogously to quantum teleportation by collecting Hawking radiation and performing measurements on the black hole. Importantly, these methods only require the ability to perform measurements from outside the event horizon and to collect the Hawking radiation emitted after the state of interest is dropped into the black hole.
Maybe that explains what's been happening to my gears program! But it'd be too bad if there turned out to be a firewall after all ... WFL On 7/27/15, Henry Baker <hbaker1@pipeline.com> wrote:
FYI --
http://arxiv.org/abs/1507.03592
Aidan Chatwin-Davies, Adam S. Jermyn, Sean M. Carroll
We demonstrate an algorithm for the retrieval of a qubit, encoded in spin angular momentum, that has been dropped into a no-firewall unitary black hole. Retrieval is achieved analogously to quantum teleportation by collecting Hawking radiation and performing measurements on the black hole. Importantly, these methods only require the ability to perform measurements from outside the event horizon and to collect the Hawking radiation emitted after the state of interest is dropped into the black hole.
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Unfortunately it requires shooting the black hole through a Stern-Gerlach to measure it's spin. Brent On 7/27/2015 9:00 AM, Henry Baker wrote:
FYI --
http://arxiv.org/abs/1507.03592
Aidan Chatwin-Davies, Adam S. Jermyn, Sean M. Carroll
We demonstrate an algorithm for the retrieval of a qubit, encoded in spin angular momentum, that has been dropped into a no-firewall unitary black hole. Retrieval is achieved analogously to quantum teleportation by collecting Hawking radiation and performing measurements on the black hole. Importantly, these methods only require the ability to perform measurements from outside the event horizon and to collect the Hawking radiation emitted after the state of interest is dropped into the black hole.
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