Science fiction multiplies time travels, most often as prowesses without serious physics behind. But quantum intrication, validated in the laboratory, opens a narrow flaw in the arrow of time. According to the calculation, transmitting messages to the past would require less effort than towards the future, provided that it accepts a dose of noise in the channel. A noised quantum channel, more efficient in the sense of the past The idea starts fr…
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Science fiction multiplies time travels, most often as prowesses without serious physics behind. But quantum intrication, validated in the laboratory, opens a narrow flaw in the arrow of time. According to the calculation, transmitting messages to the past would require less effort than towards the future, provided that it accepts a dose of noise in the channel. A noised quantum channel, more efficient in the sense of the past The idea starts fr…