QVNT

Advansed quantum computation simulator, written in Rust

Features

1. Ability to simulate up to 64 qubits, which is a limit for 64-bits machines. But usual machine (with 4Gb RAM) only allowed to run 26 qubits, which is enough for study cases;
2. A set of necessary 1- or 2-qubits operations, including general 1x1 and 2x2 unitary matrix, to build your own quantum circuits;
3. Existed quantum operations are tested and debugged to be safe in use;
4. Accelerated circuit execution using multithreaded Rayon library;
5. Complex quantum registers manipulations: tensor product of two registers and aliases for qubit to humanify interaction with register.

Usage

```rust use qvnt::prelude::*;

// create quantum register, called 'x', with 10 qubits let mut qreg = QReg::new(10).aliaschar('x'); // or with initial state, where 3 qubits are already in state |1> // let qreg = QReg::new(10).aliaschar('x').init_state(0b0011100000);

// get virtual register 'x', to interact with specified qubits let x = qreg.getvregbychar('x').unwrap();

// create qft operation, acting on first 5 qubits in q_reg let op = Op::qft(x[0] | x[1] | x[2] | x[3] | x[4]);

// apply operation q_reg.apply(&op);

// measure and write first 3 qubit, which leads to collapse of qreg wave function println!("{}", qreg.measure_mask(x[0] | x[1] | x[2])); ```

Implemented operations

• Pauli's X, Y & Z operators;
• S & T operators;
• Phase shift operator;
• 1-qubit rotation operators;
• 2-qubits rotation operators, aka Ising coupling gates;
• SWAP, iSWAP operators and square rooted ones;
• Quantum Fourier Transform;
• Universal U3 operator.

Also, ALL these operators could be turned into controlled ones, using .c(...) syntax: rust let usual_op = Op::x(0b001); // NOT gate, controlled by 2 qubits, aka CCNOT gate, aka Toffoli gate let controlled_op = Op::x(0b001).c(0b110);

In work

1. Optimizing and vectorizing operations.
2. Adding inverse operators for implemented ones.
3. Writing documentation for all functions.