5 stable releases
1.3.1 | Nov 6, 2023 |
---|---|
1.3.0 | Mar 21, 2023 |
1.2.0 | Nov 28, 2021 |
1.1.0 | May 25, 2020 |
1.0.0 | May 23, 2020 |
#37 in Simulation
235KB
5.5K
SLoC
qasmsim
A QASM interpreter and quantum simulator in Rust.
Prerequisites
Make sure you have cargo
installed.
For compiling the WASM version, make sure you have wasm-pack
also installed.
What is missing?
Looking for what's new? See RELEASE_NOTES.
Very few is missing, but the most important things are allowing the inclusion
of external libraries throught the include
directive, and improve the
reporting of errors. Nevertheless,
including qelib1.inc
is possible since it comes with the interpreter.
Planned for future versions is:
- Allow including external source.
- In the native lib.
- In the WASM version.
- Add a semantic checker for checking the correctness of the program before runtime.
- Handling opaque gates. Right now they are ignored and calling an opaque gate results in Error, like trying to call an undefined gate.
A sample QASM program can be found here:
OPENQASM 2.0;
include "qelib1.inc";
qreg q[2];
h q[0];
cx q[0], q[1];
The complete specification can be found under the QASM repository.
qasmsim CLI
Install qasmsim
with:
$ cargo install --git https://github.com/delapuente/qasmsim
And simulate a QASM program with:
$ qasmsim source.qasm
See more options with:
$ qasmsim --help
qasmsim 1.2.0
A QASM interpreter and quantum simulator in Rust.
USAGE:
qasmsim [FLAGS] [OPTIONS] [source]
FLAGS:
-b, --binary Prints the binary representation of the values
-h, --help Prints help information
-x, --hexadecimal Prints the hexadecimal representation of the values
-i, --integer Prints the interger representation of the values. Default option
--probabilities Prints the probabilities vector of the simulation. Ignored if shots is set
--statevector Prints the state vector of the simulation. Ignored if shots is set
-t, --times Prints times measured for parsing and simulating
-V, --version Prints version information
-v Verbosity of the output
OPTIONS:
--info <info> Show gate-related information
--out <out> Output files prefix, print in the stdout if not present. The output format of each file is
CSV. At most, three files are created with the names out.memory.csv, out.state.csv and
out.times.csv
--shots <shots> Specify the number of simulations
ARGS:
<source> QASM program file, read from stdin if not present
qasmsim library
qasmsim
is also a library including a QASM parser which generates a QASM AST,
an interpreter, and a quantum state-vector simulator. The command-line tool is
just one of the multiple consumers the library can have. If you want to install
the library functionality only, remove the default
features when installing:
$ cargo install --no-default-features
Testing the project
You can refer to unit tests (in the files under the src
folder) and integration tests (under the tests
folder) to figure out what is implemented. For passing the tests of the project you can do:
$ cargo test
WASM version
qasmsim
can be used in the web if you compile it for Web Assembly. Doing it is easy, simply download the sources, ensure you have wasm-pack
installed and run:
$ wasm-pack build -- --features="serde"
It will compile your project and pack it inside the pkg
folder. Now enter the www
directory, install the dependencies with (you only need run this once):
$ npm install
And start the web server with:
$ npm start
Browse the URL provided by the second command and you'll see a blank page. Go to the developer tools of your browser and try running a small test:
var result = qasmsim.run(`
OPENQASM 2.0;
include "qelib1.inc";
qreg q[2];
h q[0];
cx q[0], q[1];
`);
The module is exported by default as the qasmsim
object in window
and implements the following interface:
interface qasmsim {
run: (input: string, shots?: number) => Execution,
simulate: (program: OpenQasmProgram, shots?: number) => Computation,
parseAndLink: (source: string) => OpenQasmProgram,
parseProgram: (source: string) => OpenQasmProgram,
parseLibrary: (source: string) => OpenQasmLibrary,
parseExpression: (source: string) => Expression,
parseProgramBody: (source: string) => Statement[],
parseStatement: (source: string) => Statement
getGateInfo: (source: string, gateName: string) => GateInfo
}
interface Computation {
histogram?: Histogram,
probabilities: Float64Array,
statevector: { bases: Float64Array, qubitWidth: number },
memory: Memory
}
interface Execution extends Computation {
times: ExecutionTimes
}
type Memory = { [key: string]: Array[number] }
type Histogram = { [key: string]: Array[[number, number]] }
type ExecutionTimes = {
parsing: number,
simulation: number,
serialization: number
}
type GateInfo = {
docstring: string,
name: string,
realParameters: Array[string],
quantumParameters: Array[string]
}
License
Licensed under either of
- Apache License, Version 2.0 (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)
- MIT license (LICENSE-MIT or http://opensource.org/licenses/MIT)
at your option.
Contribution
Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.
Dependencies
~4–10MB
~165K SLoC