Category:Quantum Memory Network Stage: Difference between revisions

From Quantum Protocol Zoo
Jump to navigation Jump to search
No edit summary
No edit summary
Line 1: Line 1:
[[Category: Network Stages]]
[[Category: Network Stages]]
In this stage, the end nodes have the capability to have a local memory while
In the fifth network stage, the end nodes have the capability to have a local memory which allows them to store quantum states. A crucial difference between this stage and the previous one is that we are now able to transfer unknown qubits from one network node to another for example, by performing deterministic [[Teleportation|teleportation]].  
allowing universal local control. A crucial di�erence between this stage and
the previous one is that we are now able to transfer unknown qubits from
one network node to another for example, by performing deterministic tele-
portation. Technology that can be used to deterministically relay qubits over
long distances by means of large-scale quantum error correction implies the
technological capability of realizing a good local quantum memory.
Applications:
3
This stage also implies the ability to perform entanglement distillation and
generate multipartite entangled states from bipartite entanglement by exploit-
ing the ability for local memory and control.
An important parameter in application protocols is the number of commu-
nication rounds and the number of times information is sent back and forth
between two end nodes during the course of the protocol. For useful applica-
tion protocols, the storage time needs to be compared with the communication
time in the network instead of an absolute time. If the network of nodes are
far apart, they exhibit longer memory time to attain this stage and the quality
of memory is time dependent. The storage time is related to maximum time
it takes for any two nodes to communicate because a stage is attained only if
the functionality is available to any two nodes in the network, even the two
that are farthest apart.
 
==Applications==
==Applications==
This allows the implementation of much more complex protocols that require
This stage also implies the ability to perform entanglement distillation and generate multipartite entangled states from bipartite entanglement by exploiting the ability for local memory and control. It allows the implementation of much more complex protocols that require temporary storage of a quantum state during further quantum or classical communication. Interesting applications outside the domain of cryptography are exploiting long distance entanglement to extend the baseline of telescopes, for basic forms of leader election and for improving the synchronization of clocks.
temporary storage of a quantum state during further quantum or classical
==Relevant Parameters==
communication. Examples include protocols for solving distributed systems
tasks.
Cryptographic tasks can implemented like allowing clients to make use of
these computers securely, without revealing the nature or outcome of the com-
putation (secure assisted quantum computation, blind quantum computation).
We would only need a quantum internet here which would allow a client to
communicate with the computing server.
Other cryptographic tasks in this domain are tools such as protocols for
the sharing of classical or quantum secrets including veri�able secret-sharing
schemes, anonymous transmissions.
Other interesting applications outside the domain of cryptography are ex-
ploiting long distance entanglement to extend the baseline of telescopes, for
basic forms of leader election and for improving the synchronization of clocks.

Revision as of 03:53, 11 July 2019

In the fifth network stage, the end nodes have the capability to have a local memory which allows them to store quantum states. A crucial difference between this stage and the previous one is that we are now able to transfer unknown qubits from one network node to another for example, by performing deterministic teleportation.

Applications

This stage also implies the ability to perform entanglement distillation and generate multipartite entangled states from bipartite entanglement by exploiting the ability for local memory and control. It allows the implementation of much more complex protocols that require temporary storage of a quantum state during further quantum or classical communication. Interesting applications outside the domain of cryptography are exploiting long distance entanglement to extend the baseline of telescopes, for basic forms of leader election and for improving the synchronization of clocks.

Relevant Parameters

Retrieved from "https://wiki.veriqloud.fr/index.php?title=Category:Quantum_Memory_Network_Stage&oldid=3502"