You are given a source of an unknown qubit state. You make measurements in the computational basis, that is, your measurement is {|0⟩⟨0|,|1⟩⟨1|} . You observe that you see the outcome zero 30 times and the outcome one 70 times out of a hundred measurements. What is your estimate of the absolute ...
I have a state $|\psi\rangle=(\left|1\rangle_1|1\rangle_2-|0\rangle_1|0\rangle_2)(|0\rangle_3|1\rangle_4-|1\rangle_3|0\rangle_4)(|0\rangle_5|1\rangle_6-|1\rangle_5|0\rangle_6\right)$. With the subindexes meaing the particle number. What does it mean when it is said that we measure qubit 1 and 5 i...
use pqcrypto_frodo::frodokem1344aes::*;
let (pk, sk) = keypair();
let (ss1, ct) = encapsulate(&pk);
let ss2 = decapsulate(&ct, &sk);
assert!(ss1 == ss2);
In the above code, only one keypair is generated. The public key is then used to 'encapsulate', which returns a ciphertext and a shared sec...
I'm actually searching two types of documents (could be the same):
1) A synthesis about all the main gap/problems that make the physical realisation of a quantum computer actually infeasible.
2) Something more polemical that criticizes the point of view "quantum computers arrive soon! They will...
This question refers to Nielsen and Chuang's Exercise 4.22:
Prove that a $C^2(U)$ gate (for any single qubit unitary U) can be
constructed using at most eight one-qubit gates, and six controlled-not gates.
To prove this, I decomposed all $C(V)$ operations into $AXBXC$ form and ended up with ...
In Quantum Computation and Quantum Information,
$C(U) = AXBXC$ where $A=R_z(\beta)R_y(\gamma/2) , B=R_y(-\gamma/2)R_z(-(\delta + \beta)/2), and C=R_z((\delta - \beta)/2)$ .
Instead is it possible to change the decomposition into $C(U)=AXBX$ where $A= R_y(\gamma/2)R_z((\delta + \beta)/2)$ and...
These two kinds of qubits are both classified under "charge qubits", looking for them, I always find the same circuit representation.
Occasionally, I find one where there's a SQUID instead of the Josephson junction, but I don't think this is the difference.
What is the difference?
I'm trying to implement an algorithm (https://dl.acm.org/citation.cfm?id=1128034, basically a simple Grover Algorithm in which the oracle is made of a Fitness operator- some CNOT gates- and 2 adders) and when I try to simulate it on ibm_qasm_simulator I get the error:
"Job resulted in the follow...
use pqcrypto_frodo::frodokem1344aes::*;
let (pk, sk) = keypair();
let (ss1, ct) = encapsulate(&pk);
let ss2 = decapsulate(&ct, &sk);
assert!(ss1 == ss2);
In the above code, only one keypair is generated. The public key is then used to 'encapsulate', which returns a ciphertext and a shared sec...
I'm actually searching two types of documents (could be the same):
1) A synthesis about all the main gap/problems that make the physical realisation of a quantum computer actually infeasible.
2) Something more polemical that criticizes the point of view "quantum computers arrive soon! They will...
This question refers to Nielsen and Chuang's Exercise 4.22:
Prove that a $C^2(U)$ gate (for any single qubit unitary U) can be
constructed using at most eight one-qubit gates, and six controlled-not gates.
To prove this, I decomposed all $C(V)$ operations into $AXBXC$ form and ended up with ...
These two kinds of qubits are both classified under "charge qubits", looking for them, I always find the same circuit representation.
Occasionally, I find one where there's a SQUID instead of the Josephson junction, but I don't think this is the difference.
What is the difference?
