Quantum networks are closer to reality
When the photon interacts with the quantum memory, it becomes entangled with the memory – meaning that measurements performed on either the photon or the memory would provide information on (and thus modify) the state of the other.
However, instead of measuring the photon (and thus extracting the information), the photon undergoes quantum frequency conversion from visible frequency (where the quantum memory operates) to telecom frequency (where losses in optical fiber are minimized). The (now telecom-frequency) photon then makes a round trip through an underground fiber network before returning to Harvard, where it is converted back to visible frequency.
This journey accomplished, the photon is bounced off a different quantum memory in a different lab, thus transferring the entanglement from the photon onto this second memory. Finally, the photon, having bounced off the second memory, is then routed to a detector which notes the presence of a photon, but does not reveal any of the underlying quantum information contained in the light.It entangled with the memory — meaning that measuring either the photon or the memory modifies the state of the other. The photon then converts from a visible frequency to a telecom frequency, which then bounces to a different lab, thus completing the journey.
You may be interested
![Horoscope from July 27 to August 3: Predictions for Leo, Virgo, Libra and more](https://associattedpress.com/wp-content/uploads/2024/07/5521484-520x273.jpg)
Horoscope from July 27 to August 3: Predictions for Leo, Virgo, Libra and more
new admin - Jul 26, 2024Aries (Mar21/Apr20)A trip is being planned to visit the land of your ancestors or a place that holds special childhood…
![Crews struggle to contain monster wildfire in California](https://associattedpress.com/wp-content/uploads/2024/07/evansvigs-520x273.jpg)
Crews struggle to contain monster wildfire in California
new admin - Jul 26, 2024Crews struggle to contain monster wildfire in California - CBS News Watch CBS News The arson-sparked Park Fire burning near…
![Dolphins, Tua Tagovailoa agree to record $212.4 million contract extension: reports](https://associattedpress.com/wp-content/uploads/2024/07/Tua-Tagovailoa5-520x293.jpg)
Dolphins, Tua Tagovailoa agree to record $212.4 million contract extension: reports
new admin - Jul 26, 2024[ad_1] After the best season of his career, Tua Tagovailoa isn't going anywhere.He and the Miami Dolphins have reportedly agreed…